The ultimate flight sock for protection against DVT on long haul flights
A pro-golfer's extensive travel lifestyle carries the risk of DVT. This short film explains the benefits of graduated compression technology both in travel and on the course.

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The information on this website is not intended as a substitute for the advice from your healthcare professional.
Your doctor is in the best position to assess your condition and prescribe the correct treatment.
Compression Advisory conform to the Distance Selling Regulations, which are designed to protect you when buying items by Mail Order.
After a long haul or short haul flight the one symptom we all suffer from is swelling. Often you don't even realise, what usually happens is that you take off your shoes and when you put them back on they feel tighter. This is because during a journey (which can be by any mode of transport such as car, plane or train) our feet and legs will swell when we sit down for a long period of time. This is the reason why your legs often ache, feel heavy, swollen or tired after a long haul or short flight.
Scientists have done a lot of clinical research into what happens to the blood flow in our legs when we are, active, sitting or lying down. The reason why they are interested in this area is because of DVT - Deep Vein Thrombosis. One recent study looked at the blood flow in the deep veins of the calf when seated, as this is where DVT's usually form. The amazing discovery was that blood flow slowed down by about 50% after just 90min in the seated position. This has major implications for a persons health, because when your blood flow and circulation slows down you are at greater risk of blood clotting and developing a DVT. This is why in hospital DVT causes such a problem and leads to several thousand deaths a year. When you are in hospital and confined to a bed and you are not using your legs, in particular your calf muscle is not pumping blood up your legs as it usually would. So, many measures have been used to reduce this risk. One key measure, which is now effectively a law in hospitals around the world is the fitting of medical grade compression socks. Scientifically proven, clinical grade graduated compression socks; aid circulation, improve venous return - therefore reducing the DVT risk and ensure swelling is kept to a natural minimum. When you are admitted to hospital by a nurse, careful measurements of your ankle, calf and leg are taken. Based on these measurements a well fitted graduated compression sock - similar to gctech™, will be provided for you to wear for the duration of your stay. The medical grade compression support socks (gctech™) are made to very specific standards and the manufacturer must pass certain rigorous tests to make sure the medical grade compression (gctech™) socks provided meet the high clinical standards required to make these scientifically proven socks. The medical grade compression socks (gctech™) work by squeezing your legs in a very specific way. They provide a set amount of pressure at the ankle. This pressure slowly decreases as you go up the leg, causing a gradient squeeze - for the hospital this is very specific and is referred to as Class 1 graduated compression. By squeezing your legs like this they support the calf muscle and help the blood flow in the vein - by speeding it up and hence reducing your risk of blood pooling, prevent swollen legs, reduce fatigue, and more importantly reduce the risk of getting a DVT.
This gc tech™ technology is great for the hospital but research work has shown it is also useful for almost everyone, especially if they are putting a strain on their legs. For e.g. prolonged sitting or standing while working or exercising can induce tired, achy heavy swollen limbs. We at the Compression Advisory have a strong medical and clinical background and know it's the gctech™ support socks with hospital technology that really work, as these have been scientifically tested and clinically proven. Hence our mission is to ensure everyone has an awareness and access to the gctech™ technology and has access to the education available to understand the benefits of wearing this type of medical grade compression gctech™ product.
We know that people on a plane, or travel for long periods by other means, would greatly benefit from well fitted, properly made gctech™ flight socks or travel socks. Because sitting down for long periods really increases your chances of getting a DVT. Also everyone in a plane seems to suffer from swelling as swollen legs are not bias to travellers in economy class stuck in a confined space or in first class on a bed. Everyone seems to have tired, achy swollen legs by the end of the flight. Statistics have also shown everyone's risk of DVT was also increased, no matter where you sat. We know that the gctech™ flight socks and travel support socks reduce swollen legs, aid tired, achy or heavy legs and reduce the DVT risk.
Our market research showed that people often didn't know the difference between the variety of cheap unisex flight socks or travel socks on the market and why some were better than others. Our goal was to give our customers the peace of mind they were buying fitted medical grade, graduated compressive flight socks and travel socks (gctech™) that had been made to standards that would ensure proper graduated compression. The flight socks and travel socks had to be well fitted and made to class one graduated compression standards. Only then would we be happy to approve the unisex flight socks and travel socks for use, otherwise you would not get all the benefits such as less swelling, reduced tiredness/fatigue, reduced DVT risk.
It is because of this passion we have been chosen by Manchester United FC, Arsenal FC, England football and Rugby football union (RFU)... to ensure the players have the best possible flight socks and travel socks when they fly to make sure they arrive in the best condition.
Our unisex flight socks and travel socks are made only in factories where they make medical grade compression socks for the NHS. We use that same technology as the base for all our gctech™ products, all we do is enhance the hospital version by using better materials, wicking agents and naturally occurring antibacterial compounds. This makes our gctech™ flight socks and travel socks more comfortable to wear and easier to put on compared to the compression socks in the hospital. However our unisex flight socks and travel socks (gctech™) are still made to the same standards, by medical grade knitting machines in a temperature and humidity controlled environments. Our unisex flight socks and travel socks (gctech™) are hand tested to ensure they comply with the correct medical profile. So you can be confident when wearing gctech™ flight socks and travel socks on a plane, coach, in a car or on long train journeys, you are getting the clinically proven benefits of a well fitted graduated compression flight socks and travel socks - boosting the blood flow in your veins - reducing the risk of DVT and letting your legs arrive in better condition.
For UK orders your goods will usually be dispatched within 24 hours Monday to Friday and should arrive Royal Mail 1st class post, normally within 2 days*. This standard delivery service is £5.00. An optional special delivery service is also available for UK orders Monday to Friday and this service, using Royal Mail Special Delivery, should arrive, the next day*. The Special Delivery Service, which also offers itemised tracking and postal insurance, is £7.50. Delivery for most countries in the EU will be charged a standard £7.50 with a delivery aim of up to 5 days, but this price may be subject to change based on a specific location and weight, as charged by Royal Mail. If this price should change as per your order, a member of the customer services team will notify you before the order is processed to confirm that you would wish to complete it. The delivery times detailed are estimates on the basis of a full order being placed of standard items and confirmed by 2pm on a working day. Standard items refers to the standard GC Tech sock's that come in colours, black, white, navy blue, royal blue and red. Occasionally we might be out of stock of an item in your order, should this occur we will email you immediately and ask if you wish us to cancel the item from your order. There will be no additional cost to you for us dispatching items separately in this instance. If you have any special deadlines for delivery, please call or email us to let us know. Delivery times for individualised items will be quoted on a per order basis.
* The delivery estimates detailed above are based on those provided by the Royal Mail. These estimates are guidelines and although we will try our very best to maintain the service described, sometimes due to unforeseen circumstances the delivery services may experience delays or suspension. Should any unforeseen circumstances, such as adverse weather conditions, affect the delivery of your items, we will contact you as soon as possible.
Should your goods be returned to us as undeliverable by Royal Mail or courier, we will contact you to arrange redelivery, however we reserve the right to make a further charge to cover our additional postage expense. We take no responsibility for goods lost in transit due to an incorrectly supplied address.
A selection of our range is offered as Special Order only. These are items which we do not normally hold in stock such as our non-standard colours and made to measure range, but can order from our manufacturers on your behalf. Non-standard colours are claret, yellow, gold and green. Special order products are clearly marked as such within our website. For these items, the above delivery time estimates do not apply. If you have a time dependency and require these items, please call us prior to ordering to establish availability and expected delivery timescales.
Payment Methods
Compression Advisory accepts the following payment methods
Please note: for cheque payments, goods will be dispatched on cheque clearance.
Your Rights
Compression Advisory is a UK based company and complies with UK consumer law including the Distance Selling Regulations, which are designed to protect you when buying items by Mail Order. This means that shopping with Compression Advisory is safe. We will sort out any problems you have. Our Terms and Conditions do not affect your statutory rights.
Distance Selling Regulations give you the right to cancel a standard order and return standard goods that may already have been dispatched, this does not include Special Order Items, (see Returns) up to 7 days from receipt.
Returns
If for any reason you wish to return a standard item to Compression Advisory for exchange or refund, please return it unused in original undamaged packaging with labels intact, within 14 days of purchase. Please notify us by email prior to sending goods back. Special order items are not able to be returned at any point. Items are returned at customers' own cost and the correct postage must be paid. Refunds are for the order amount minus our incurred postage expense. Statutory rights are not affected. For exchanges, our standard postage rate is charged. Click here for more details, returns address and instructions on how to return to us for refund or exchange.
Should any item purchased from us prove faulty or incorrectly packed on receipt, then please return it to us, and we will replace it or refund, including refunding your UK 1st class postage expense back to us. This does not affect your legal statutory rights. Click here for instructions on how to return to us.
We reserve the right to charge an admin fee of up to £5 for handling of returned goods sent in contravention of our policies (here). Volume discounted orders are deemed business to business transactions and different terms and conditions apply.
Standard goods bought from the website may be returned for exchange or refund within 7 days of purchase. Goods must be returned to us unused, in original undamaged product bag and with labels intact within 7 days of purchase. Please include the original order number and details of your requirements. The best way to do this is to enclose our delivery note back in with the goods in outer packaging (i.e. not within the product bag), with a note written on it indicating what is required instead. Items are returned to us at customers own expense, and the correct postage must be paid. Our mailing sacks are usually re-usable with parcel tape. The address to send to is:
Evexar Compression Advisory Ltd.
30 Dulwich Road
London
SE24 0PA.
We require that you let us know by email if you are returning any goods to us. This ensures that we are expecting your package; helps us to manage our stock levels effectively and allows to organise availability of any exchange goods. Please email returns@compressionadvisory.com and include:
Exchanges
We do charge postage for exchanges. This is calculated at our standard postage rate for the replacement item. Credit card details must be supplied to make this payment. If your order was originally paid for by cheque, when sending goods back, please enclose a cheque made out to 'Compression Advisory' for an amount equivalent to your 1st class cost of sending the returned goods back to us.
Amendments.
We are unable to make amendments to an order once the order has been processed and the email confirmation has been sent to the consumer. If the consumer would like for an amendment to be made, such as an exchange or cancellation, it is the responsibility of the consumer to return the product and detail this. No amendments can be made to special order items after the order has been processed and confirmed.
Cancellations.
We are unable to make cancellations to special order items once the order has been confirmed. We refund standard items minus our direct postal expenses. This is also what it will cost you to return the goods to us 1st class. For card payment, the refund is made directly to the card, card details will need to be supplied and we will email you to confirm when this has been actioned. The payment then takes 2-3 days to clear back to your card.
Faulty.
Should any item purchased from us prove faulty on receipt, then please contact us by email as described above, prior to returning the goods to us and we will respond with instructions for return of the goods to us for inspection. Once the fault is confirmed, the goods will be replaced or refunded and any first class postage incurred reimbursed.
Incorrectly packaged goods.
If you receive goods sent incorrectly, please let us know immediately by email and we will contact you as per faulty goods to resolve the error and get the correct items off to you by return.
General Notes:
Statutory rights are not affected. Goods returned requiring excess postage on receipt will not be accepted and will be returned to sender. We reserve the right to charge an admin fee of up to £5 for handling of returned goods sent in contravention of any of the above policies.
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When you order from us, we gather information as follows:
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Compression Advisory offer the use of secure servers where information is protected by Secure Sockets Layer (SSL), the industry standard encryption technology. SSL works with Netscape Navigator, Microsoft Internet Explorer, AOL and other browsers. This encryption makes it virtually impossible for unauthorised parties to read any information that you send us.
When your order is processed your encrypted credit card number is removed from the web server.
This means that there is no way that someone can obtain your credit card number from Compression Advisory so you can order with confidence.
Please be aware that in the interests of credit card security you may be contacted prior to the dispatch of your order with a request for additional information.
For orders placed from within the EU prices include VAT (Value Added Tax) charged at the rate appropriate to the destination country of the order. VAT does not apply to orders that are to be shipped outside the E.U. or to Tax Free areas such as the Channel Islands. These areas will be priced and billed with VAT deducted. Please note that local tax and customs duty may apply. For full details please consult your local Customs office.
If you select a currency or a delivery country outside the E.U., prices will be displayed VAT free.
Whilst we do our best to ensure prices are up to date and correct, errors may occur and in this case you will be contacted before your order is shipped.
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The term 'Compression Advisory' or 'us' or 'we' refers to the owner of the website whose registered office is Evexar Compression Advisory Limited, 30 Dulwich Road, London SE24 0PA, United Kingdom. The term 'you' refers to the user or viewer of our website.
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Unlike many competitor products, gctech™ flight socks are individually sized, allowing you to tailor the socks to your exact requirements, ensuring maximum protection and comfort.
A choice of fit and colours
Our fitted flight sock will accommodate most people's foot and calf sizes. If yours is out of the range, you can order a Made to Measure sock.
All our flight socks are available in a range of eight colours.
The gctech™ sock is the sock of choice for travel for elite teams across the UK - England football, England Rugby, Manchester United and Chelsea FC.
When to use gctech™ travel & flight socks
gctech™ travel and flight socks have
been designed to replace your 'normal' socks and can be worn on a daily basis. As a minimum, they should be worn for all travel where there
is likely to be a period of immobility longer than 3 hours.
People at greater risk of DVT should wear them more often and for shorter trips.
Such people include;
gctech™ socks are designed to be worn for up to 24 hours by any adult man or woman.
There are certain medical conditions where the daywear sock is ideal;
Being a medical device there are certain conditions where the sock should not be worn or should only be used under the advice of a clinician;
Please be aware that because of the design of the sock, a degree of effort to stretch and pull on is required. People with severe arthritis or weakness in their upper limbs should exercise caution.
The Compression Advisory have a medical team that can directly advise on when to wear compression socks. If you have any questions please email or call and we will respond to your query as soon as possible.
The information on this website is not intended as a substitute for the advice from your healthcare professional. Your doctor is in the best position to assess your condition and prescribe the correct treatment.
Dr Jane Zuckerman is Director of the Academic Centre for Travel Medicine and Vaccines, a WHO Collaborating Centre for Reference, Research and Training in Travel Medicine. She holds the positions of Sub-Dean and Senior Lecturer and Honorary Consultant at the Royal Free and University College Medical School and the Royal Free Hampstead NHS Trust, London. She is also the Medical Director of the Royal Free Travel Health Centre and leads the Vaccine Clinical Trials Research Group at the Whittington Hospital NHS Trust. Her major fields of interest include the evaluation of new travel related and more general vaccines including those of hepatitis A and B.
Dr Zuckerman received the award of UK Hospital Doctor of the Year 2001 and the UK Hospital Doctor Innovation Award for 2001. She was also listed in 2001 by the British Medical Association as one of the 82 "Pioneers in Patient Care: NHS Consultants leading change".
Dr Jane Zuckerman, MD, FRCP(Ed), FRCPath, MRCGP, FFPH, FFPM, FFTM, FHEA
Director WHO Collaborating Centre for Travel Medicine
Academic Centre for Travel Medicine & Vaccines
UCL Medical School Occupational & Royal Free Travel Health Centre
Sub-Dean Electives
Editor, Journal of Travel Medicine & Infectious Disease
University College London Medical School
Rowland Hill Street
London NW3 2PF