K01 hoods are made of HAYATO neoprene in two versions from 5 mm and 8 mm with unique performance and high quality material.
EXTERNAL = built with micro lining for maximum elasticity of the cap.
INTERNAL = smooth neoprene / silicone to maintain maximum heat. Extremely soft and slippery for easy dressing and comfort.
K01 hoods you can try at Krnicadive all year arround
More info about K01 products you can find here