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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 4-Piece Set saves you the most. The Xerotherm Unisex 3-Piece Set includes the Xerotherm Unisex Long Sleeve Top, Xerotherm Unisex Leggings, Xerotherm Unisex Vest and Xerotherm Unisex Socks.

Please refer to Fourth Element size chart for proper fit.