New Grivel Crampons Air Tech Hybrid Dualmatic Evo Hybrid type with sturdy chromoly front and lightweight aluminum heel. Dualmatic with interchangeable front bails for pneumatic and automatic 2 types. Standard M size transformer bail is attached. This system can be used for mountaineering boots with welts on the heel. It is a semi-automatic type, so it is easy to put on and take off. Narrow bail is included. The automatic bail is a system for mountaineering boots with welts on both the front and back for winter mountain use. The loop of the front bail also acts as a spring, and it firmly secures the shoes together with the heel binding, creating a sense of unity with the shoes. Compared to the G12, the Air Tech crampons have all the claws designed to be shorter. The shape and direction of each claw are also devised, allowing for stable walking not only on snowy and icy slopes but also on routes with many exposed rocks, such as rocky ridges where snow has been blown away by the wind. The front piece is shorter than the G12, so the claws are closer to the toes, and many claws grip firmly even in narrow stances. The semi-circular cutouts on the claws act as "barbs" to increase the grip on ice and rocks.