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Fourth Element Men's Xerotherm Long Sleeve Top

Fourth Element Men's Xerotherm Long Sleeve Top

Fourth Element



The Fourth Element Xerotherm is the ultimate base layer for use under a dry suit. Made using Polartec Power-Stretch 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 range is designed to be worn under another under suit or on its own under a neoprene dry suit and provides astonishing warmth without contributing to bulk or buoyancy. In fact, the buoyancy effects of the Xerotherm are so small that they rarely impact on weight configuration, yet dramatically improve warmth.

The Xerotherm represents the ultimate in base layer performance, unrivalled by anything else on the market. Xerotherm has been to the top of Everest and down to the Titanic, as well as being specified by the FBI Dive Teams, Norwegian Navy and British Police Diving Units. Xerotherm provide excellent thermal protection and comfort. Constructed using flat locked stitching and single layer high wicking fleece fabric; it protects the torso and arms and complements the Xerotherm under suit range with long design to prevent separation of the leggings during the dive. It is low bulk and can be worn under other thermal tops without making dry suit too tight or uncomfortable. The knit of the Xerotherm fabric produces the fastest wicking effect of any of the products in the fourth element product range. Moisture is drawn out through the fabric along fine fibers and then spreads out over the outer surface. This maintains a thin layer of air (a more efficient insulator than water) next to the skin. This is so effective in the Xerotherm that some wearers report experiencing minor suit leaks during the dive without even noticing until after the dive. As a standalone undergarment, the Xerotherm is suitable for thermal protection in water temperatures of 66.2 Degree F to 68 Degree F (19 Degree C to 20 Degree C). Thumb loops at the wrists make donning a dry suit on top of the Xerotherm easy. The top is black in color and are available in multiple sizes. Fabric is 53% polyester, 38% nylon and 9% Elastane.

Product Features

  • Fourth Element XT250 Xerotherm Top Men's
  • Ultimate Base Layer for Use Under a Dry Suit
  • Polartec Power-Stretch: Originally Developed for NASA
  • Xerotherm:
    Traps Layer of Air
    Much Better Insulator than Water, Next to Skin
    Keeps Wearer Drier and More Comfortable
  • Designed to be Worn Under Another Under Suit
  • Single Layer Under Neoprene Dry Suit:
    Provides Astonishing Warmth
    Won't Contribute to Bulk or Buoyancy
    Rarely Impact on Weight Configuration
    Dramatically Improves Warmth
  • Xerotherm Fabric:
    Fastest Wicking Effect of Fourth Element Range
    Moisture is Drawn Out Thru Fabric Along Fine Fibers
    Spreads Out Over the Outer Surface
    Maintains Thin Layer of Air Next to Skin
    More Efficient Insulator than Water
  • So Effective, Minor Suit Leaks Not Noticed
  • Suitable for Thermal Protection in Water Temperatures of 66.2Degree F to 68Degree F (19Degree C to 20Degree C)
  • Thumb Loops for Easy Donning of Dry Suit w/o Top Arm Ride-Up
  • Updated with Men's and Women's Fits
  • Materials: 53% Polyester, 38% Nylon and 9% Elastane
  • Color: Black
Regular price $194.00 USD
Regular price Sale price $194.00 USD
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