Headsweats Cycle Cap One Size Unisex Seaway Blue CheckoutSpec= SRAM XD They allow the ski to

They allow the ski to anchor to the snow in the pushing phase and at the same time to slide in the subsequent sliding phase

2 x 9" Keyed Black/Red Includes bracket

An air release button allows fine tuning of pressure

Compatible with 9 10 11 and 12-speed (excluding Shimano 12-speed chains)

Aluminum lever blade and steel hardware ensure durability

Headsweats Cycle Cap One Size Unisex Seaway Blue CheckoutSpec= SRAM XD They allow the ski toMachine washable. Ultra low weight less than 1. 4oz. (40g). DuPont certified 40+ UPF sun protection. CoolMax Headsweat. Pulls moisture away from the skin. Dries 3 4 times faster than cotton TECH SPECS Vendor Headsweats Manufacture Number HU77010016 440 Model Name Cycle Cap Category Apparel