Fourth Element Xerotherm is the ultimate underwear layering system for drysuit diving. Constructed from specialized Polartec fabric originally developed for NASA, Xerotherm is the fastest wicking fabric in existence. This dramatically reduces conductive heat loss while diving.

Designed for versatility, Xerotherm underwear can be used on its own underneath neoprene drysuits or layered under Fourth Element Arctic or other drysuit underwear with trilaminate or other shell-type drysuits. Four-way stretch fabric ensures that Xerotherm provides outstanding thermal protection without loss of freedom or movement.

Fourth Element Xerotherm Unisex Vests boosts the performance of Xerotherm layering systems and provides enhanced thermal protection for your body core. Xerotherm Unisex Vests feature flat seam construction to maximize comfort. Xerotherm is the most effective next-to-the-skin fabric for ensuring warmth and comfort in demanding diving conditions.

Please refer to Fourth Element size chart for proper fit.