UnderCool 3 all day cooling Learn more in our cooling

Learn more in our cooling pack guide

or panels by refreezing one set while you wear the other

bringing your core temperature down from the inside out

targeted cooling

it is slightly more visible than an under-clothing vest

UnderCool 3 all day cooling Learn more in our coolingWhether you're managing heat sensitivity, MS, lupus, fibromyalgia, POTS, or menopause, or you're an actor, cosplayer, or performer who needs to stay cool under a costume, the UnderCool 3 was built for you. Lightweight, concealable, and worn discreetly under your clothes, it delivers 1 to 3 hours of dry, consistent cooling with no ice, no condensation, and no bulk. Trusted by thousands across the US for work, play, travel, and everything in between.