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Fourth Element Xerotherms Socks

Fourth Element Part #: XT250S 

  16.95


Xerotherm Socks - Choose Your Size (UK Shoe Size)



Xerotherm Socks provide excellent thermal protection and comfort. Constructed using flat locked stitching and single layer high wicking fleece fabric, they protect the extremities and complement the Xerotherm undersuit range.They are low bulk and can be worn under other thermal socks without preventing making drysuit boots too tight or uncomfortable.

The Xerotherm is the ultimate base layer system for dry suit diving. It can be used either on its own under crushed neoprene or under a Thinsulate to augment a diver's existing thermal protection. The Xerotherm is the most effective next to the skin garment for ensuring warmth and comfort in demanding environmental conditions. Under crushed neoprene suits the low volume, high thermal performance of the Xerotherm provies outstanding protection without loss of freedom of movement.


Fourth Element Xerotherm Range, Unisex Thermal Base Layer!

The Fourth Element Xerotherm is the ultimate base layer for use under a drysuit. Made using Polartec® Powerstretch® which was originally developed for NASA, the Fourth Element Xerotherm traps a layer of air - a much better insulator than water - next to the skin, keeping the wearer drier and more comfortable. The unisex range is designed to be worn under another undersuit or on its own under a neoprene drysuit, it provides astonishing warmth without contributing to bulk or buoyancy.


Fourth Element Xerotherm Socks


The Fourth Element Xerotherm Socks provide excellent thermal protection and comfort. Constructed using flat locked stitching and single layer high wicking fleece fabric, they protect the extremities and complement the Xerotherm undersuit range. They are low bulk and can be worn under other thermal socks without preventing making drysuit boots too tight or uncomfortable.


Fourth Element XerothermTechnical Specifications

The Xerotherm is the ultimate base layer for use under a drysuit. Made using Polartec® Powerstretch® which was originally developed for NASA, the Xerotherm traps a layer of air - a much better insulator than water - next to the skin, keeping the wearer drier and more comfortable. The unisex range is designed to be worn under another undersuit or on its own under a neoprene drysuit, it provides astonishing warmth without contributing to bulk or buoyancy.

Fourth Element Xerotherm Base Layer Fabric


Using ultra fast wicking fabric, the Fourth Element Xerotherm Range is the ideal alternative to cotton underneath a thinsulate or other undersuit. The garments' exceptional wicking performance means that the skin is kept dry and the wearer is much more comfortable during and after the dive, and is able to get the most out for the performance of their undersuit. Combined with the Xerotherm's Thermal Properties this makes the Foruth Element Xerothemr a warm dry base layer.

Fourth Element Xerotherm

About Fourth Element:

Fourth Element began in 1999 with a conversation over a post dive beer in Sharm-El-Sheikh, Egypt. WeFrom the outset Fourth Element set out to design high quality clothing with a simple yet diving oriented style. With backgrounds in design and human physiology, the new Fourth Element company spent a year and a half researching designs and fabrics for a range of casual and technical diving clothing.

The Fourth Element Technical Range

is designed around the principles of performance, innovation and function. Using the latest fabric technology in unique combinations and designs, the Fourth Element Technical range revolutionises thermal protection for both Wetsuit and Drysuit diving.

Fourth Element’s thermal protection has been tested in the World’s most extreme diving locations from the sub-zero waters of the Antarctic to the tropical temperatures of the Maldives and is used on expeditions where divers have never ventured before.

The drysuit range includes the Arctic undersuit which is the choice of professional and recreational drysuit divers worldwide and the innovative biomapped HALO 3D.

Fourth Element: The Green Element.


Fourth Element's Reduce - Reuse - Recycle Scheme

To minimise the waste generated, Fourth Element reuse all boxes and packaging received to ship out orders. If it looks like your box has been used before, it most probably has! Wherever possible, Fourth Element reuse, recycle or compost. This has meant that the waste Fourth Element generate is now down to one black bag a week. WFourth Element recycle cardboard, paper, plastic, glass, tins, ink cartridges, cans.

Fourth Element Product Development

All of us are aware of the many and complex environmental issues that face a business. Initiatives Fourth Element are working on currently include: Biodegradable and compostable packaging for all Fourth Element clothing to replace the plastic bags used at present. Minimising the amount of packaging required by incorporating a reusable bag as part of the product. A rolling programme to replace all materials used to manufacture the current Foruth Element range with environmentally friendly materials. The new Fourth Element lifestyle range will be the first to be replaced with some recycled and organic materials.

Fourth Element's Charitable Donations

Fourth Element support various environmental charities through the development of clothing, which firstly provides publicity and secondly generates donations from each sale. Fourth Element have been working with The Shark Trust to raise awareness of the plight of the sharks, and since November 2007, have donated over £9000 to the charity. Fourth Element are currently working with the Plastic Oceans Foundation who provide a powerful and effective platform campaigning for, supporting and funding targeted solutions aimed at significantly reducing plastic pollution in the environment.

Fourth Element; Use of Resources

Water - Fourth Element are not connected to a mains water supply and get water from their own well! Fourth Element also have a septic tank.
Electricity - Fourth Element use a "green" provider who generate some of their power from renewable sources, which do not produce harmful emissions or depend on finite reserves of raw materials. Fourth Element also have a car share scheme for staff and encourage cycling to work.

Which Fourth Element Undersuit Do I Need?

There is no generally valid rule about what Fourth Element suit to wear in different water temperatures. An individual diver's physical condition, body morphology, rate of work and working conditions and any recent exposure to cold, will influence how long he or she can tolerate exposure to different temperatures. Fourth Element give a recommendation of the range of temperatures suitable for Fourth Element undersuits with a trilaminate drysuit, but they are intended as a guide only.

As a general rule, if you are diving with a neoprene drysuit, you should be looking at the Fourth Element Arctic and Xerotherm suits. If you dive with a membrane or trilaminate suit, consider layering the Fourth Element Xerotherm with the Arctic and possibly adding the Ozone outer layer for extreme conditions. The Fourth Element HALO 3D and SubX are designed with trilaminate suits in mind for use with a base layer.

Fourth Elements Guide On Combining Thermal Layers


Fourth Elements drysuit diving thermal protection garments are designed to be used as part of a layering system which may be modified according to diving conditions. As a general rule, begin with a wicking base layer next to the skin - choose from either Fourth Element drybase or xerotherm. Then add a mid layer usually Fourth Element Arctic, or in very cold conditions, a Fourth Element SubX. The Ozone outer layer can be worn over the Xerotherm or the Arctic. You may find certain combinations work better for your style of diving, your drysuit and your personal temperature tolerance.

Safety In Cold Water!


There is no generally valid rule about what suit to wear at different water temperatures. An individual diver's physical condition, body morphology, rate of work and working conditions and any recent exposure to cold, will influence how long he or she can tolerate exposure to different temperatures. There will always exist great individual variability in thermal tolerance. The temperatures shown are approximate ranges for comfort for the different thermal performance of suit materials. The thermal performance of the suit material can be significantly reduced at depth.

Fourth Elements Interactive Choosing Your Undersuit Tool

Caring for your Fourth Element Undersuit

All the Fourth Element drysuit thermal protection garments (Arctics, Xerotherms, Core, DryBase, Halo 3D, Ozone and SubX) in the fourth element range, and the Thermocline garments should be treated in the same way.

Fourth Element Undersuits, Washing Instructions


Cool or cold wash, half the usual amount of regular washing detergent (preferably liquid form, NO fabric conditioner/softener. Then spin and line dry. DO NOT tumble dry the items as the heat may damage the fibres.

You can wash these items many times. We do know one instructor who claims to have washed a xerotherm over 500 times and it is still going strong!

Fourth Element Neoprene, Wetsuits etc. Care


Fourth Element neoprene wetsuits, gloves, boots and hoods should be rinsed in fresh water. If you need something more effective than a rinse, we recommend using a specialist wetsuit shampoo.

DiveShop Online is a Fourth Element Stockist and we a Fourth Element Test Centre, offering a Try Before You Buy! From our Teignmouth and Plymouth Dive centre's take a look at our range of products and call or email if you have any queries!!

Fourth Element Sizes



Fourth Element Mens Size Chart

Fourth Element Womens Size Chart

Fourth Element Socks Chart

Fourth Element Comparison Chart

Customer Reviews

  Great socks  Worn over thin pair of cotton socks , kept me warm in dry suit in capers 7c water temp   (13/01/2014) -


Free Shipping on Orders over 50.00

Delivery Cost

Standard Shipping
Our Standard UK Shipping charge is £3.99 (£5.99 for Large Accessories eg. Gear Gulpers) or FREE OF CHARGE on orders over £50.00. We use Royal Mail 2nd Class shipping or DPD. depending on size and value of the order. We expect to ship within 2-5 working days for standard delivery items depending on the volume of orders.
(Please note, FREE Standard Shipping is only available to Mainland UK addresses, see our Shipping Page Here for more information on where we ship)


Express Delivery
Express Delivery £6.99. Expected delivery 2-3 working days from order.


Next Working Day Delivery
Next Day Delivery £8.99. Please note that the Next Working Day Delivery option is only available if all the products you order are in stock. Orders must be placed before 12 Noon Monday Friday to be dispatched the same day.


Saturday Delivery
Saturday Delivery £30.00. Please note that the Saturday Delivery option is only available if all the products you order are in stock. Orders must be placed before 11am on Friday for Saturday Delivery.


Please Note: These shipping prices are for Mainland UK Only. Please see our shipping page for more information on where we ship.

We aim to dispatch all orders as quickly as possible using Interlink Express Courier Services or Royal Mail Services.


For more Shipping information please click here

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