Orca Thermal Full Length Performance Head Cover | 2021 | Black This Orca Thermal Head cover is ideal for long swim sessions as it keep both your neck and head area warm. It has heat-retaining X thermal lining to help keep the body warmth in, acting like a natural heater. Optimal comfort is provided by the extra soft lining in the inside also contributing to the storage of body heat. The water proof neck lining prevents icy water from getting and and body heat from getting out. The sleek finish of this head cover provides perfect stream line and will have you gliding through the water effortlessly. Features heat-retaining X thermal lining Neck Cover Soft Lining Water Proof Neck Lining