✔ NASA-developed Polartec Powerstretch | ✔ Performs even when wet | ✔ Lightweight, low bulk, high thermal protection

The Xerotherm Top is a slim-fitting drysuit baselayer designed to be worn directly against the skin. Built from Polartec Powerstretch, originally developed for NASA, it delivers impressive thermal insulation even when wet. With flat seams, a long cut to prevent separation, and thumb loops to keep sleeves in place, this top combines comfort, performance, and warmth in one essential layer.