BoneHead Composites is sponsoring the flight crew of Perlan 2. They have sent 10 helmets from size Small to XXLarge for the comfort and safety on all Perlan 2 missions. Jim Payne has worn a BH helmet on all short test flights of the Perlan 2. He has also worn a BoneHead helmet for over 7 hours in a different glider. He says it is extremely comfortable with clear voice reception.