The Bare Ultrawarmth Drysuit Hood features high-loft Ultrawarmth OMNIRED Infrared Thermal Technology embedded in the inner fabric. OMNIRED is scientifically proven and FDA-determined to conserve body heat and accelerate thermal recovery. ELASTEK outer fabric provides heat retention and superior warmth. Designed specifically to mate with the BARE drysuit collar, Ultrawarmth Dry Hoods fit comfortably, resist flushing, and are excellent additions to any dive kit.