The O'Neill Psycho 3mm wetsuit hood is one of the best ways to stay warm in the water even in the coldest of UK winter months.
 
Having a good hood increases your enjoyment in the water as you can stay out for longer and stay warm. As most of your body heat is lost via your head it makes sense to keep it warm.
 
Great for any water sport and now features Technobutter Firewall neoprene for additional warmth/flexibility.