The body reacts to cold and heat by adjusting the blood stream to different parts of the body, like hands, fingers and feet. But the body can not adjust the blood stream to your head. This to ensure the brains function during all conditions. That is why the colder it gets, the more heat you loose from the head by radiation, or even worse, by conduction in the water. You keep warmer with an effective hood. 

VENTED ANATOMICAL HOOD The H1 5mm Hood features a 5mm double layered protection invcritical heat loss areas and glideskin seals for the neck and face. 

Waterproof H1 5mm includes the unique HAVS (Hood Air Venting System) which uses one-way valves to vent annoying air build-up in the hood. 

3D Shaped Anatomical Sculpting

Glideskin Seals

HAVS Hood Air Venting System (Double Valves)

I-Span Superstretch Nylon

Bonded High Quality Nylon Thread 

Material: Neoprene 

Reflective Logo 

Colour: Black.

Sizes: S, M, L, XL, XXL