The vest is designed to maintain the protection of the body core.
Drybase is the new high wicking underwear system for drysuit diving from Fourth Element. The Drybase garments are 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.

Designed to be worn as a next to the skin garment underneath any undersuit, the drybase provides an affordable option for all drysuit divers, whether they use the fourth element Xerotherm Arctic, or any other drysuit undersuit.

Combining polyester and elastane in a grid-pattern knit, the drybase fabric is fast wicking and promotes the movement of air next to the skin, increasing comfort and improving the performance of the wearer's undersuit. Combining cutting edge fabric technology with gender specific design, the new drybase range is fourth element's newest addition to its extreme exposure protection system for drysuit diving.

The vest is designed to maintain the protection of the body core, but allows the wearer to keep it on before the dive, under other clothes and prevents having to "strip off" before putting on an undersuit.