UnderCool 3 all day cooling it is slightly more visible

it is slightly more visible than an under-clothing vest

Each pack is approximately 7" x 2

Freezes and melts at 70°F (21°C) for comfortable

bringing your core temperature down from the inside out

Up to 35% savings on new ThermApparel cooling packs

UnderCool 3 all day cooling it is slightly more visibleWhether 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.