Ultrawarmth Hooded Vests are designed to keep you warm throughout your core and head with 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. GEN2 hood vent allows trapped air to escape and prevents water from entering, while skin-in face seal—and neck seal that mates with the wetsuit collar— prevents water flushing.