ION THERMO TOPS bridge the gap brilliantly between the Neo Tops and Rashguards. Made entirely out of Bi_Poly jersey, the THERMO TOPS are quick to dry, velvety soft, warm and fantastically robust on the external surface. With multi-purpose functions, they can be used as a thicker substitute for a Rashguard on cooler days to protect you from the dreaded windchill, skin chafing and harmful UV rays. In colder waters, THERMO TOPS can be worn under your wetsuit for additional warmth.