Tear up the whole mountain with ease thanks to a little help from the 2022 Union STR stone snowboard bindings. 3D extruded aluminum heelcups are added to lock in your feet so you wont slip, while also holding up to hefty impacts in the process. STR2 Duraflex Highbacks are added with a 5/10 highback flex rating for an excellent all-mountain ride, and the aluminum ratchets lighten the load while improving the overall durability in the process.