A simple minimalist design ensures that this vest will fit under an existing wetsuit, offering enhanced protection to the body core. The neoprene fabric features a smooth outer and thermal inner lining and the hood's Smoothskin seal ensures that water ingress is minimised, whilst micro holes in the hood help to vent air with minimal water ingress. 3mm body with 5mm hood provides flexibility whilst minimising the critical loss of heat through the head. Layer this under a 5mm wetsuit for head to ankle thermal protection.