Whether hiking, biking, or working out, the Saxx Hot Shot is in its element when the heat is on, with highly breathable, quick-dry tech that amplifies the body's natural evaporative cooling capacity. DropTemp™ active cooling technology uses rapid moisture transport and evaporation to beat the heat Strategically placed mesh panels at the underarms and sides increase airflow Non-chafing Flat Out Seams™ reduce on-body irritation