THE HYPERKEWL™ EVAPORATIVE COOLING MATERIAL IS A UNIQUE FABRIC THAT ABSORBS AND SLOWLY RELEASES WATER THROUGH EVAPORATION. WE LOOK AT THIS PROCESS AS "SUPER-CHARGING" THE BODIES NATURAL COOLING PROCESS, THEREBY PROTECTING THE WEARER AGAINST HEAT STRESS. WHILE OTHER TECHNOLOGIES ARE EFFECTIVE FOR PRE AND POST COOLING WHILE YOU COMPETE, HYPERKEWL™ WORKS TO COOL YOU DURING THE COMPETITION OR STRENUOUS ACTIVITY. SIMPLY SOAK IN WATER FOR 1-2 MINUTES, GENTLY SQUEEZE OUT EXCESS WATER AND ENJOY THE COOLING EFFECT FOR UP TO 5 HOURS DEPENDENT ON AMBIENT CONDITIONS. SIMPLE, FAST AND EASY TO USE!