The inventor and his helmets

Ready to install

Space for the exhaust

Air inlet elbow in place

Reinforcement disk

Done

Air inlet elbow with non return valve and comms installed

Waiting for a dive!

Diver ready to go down, notice the weight on top of the helmet

Vesa Auvinen ready for action

And what do our Finnish friends do when the winter comes? Yes, they dive under the ice!