2027 Union Astra Step OnA(R) Snowboard Bindings The 2027 Union Astra Step OnA(R) brings the convenience of Burton&&';;s Step OnA(R) system to a smooth, all-mountain ride designed specifically for women. Built for fast entry and reliable performance, it delivers consistent response and control without the need for traditional straps. With a balanced flex and comfortable feel, the Astra Step OnA(R) is designed to keep riders confident and in control across a variety of terrain. Who are these bindings best for? Upper beginner to expert riders looking for the convenience of Step OnA(R) entry with a comfortable, easy-to-control ride. Ideal for all-mountain riders who want quick transitions and dependable performance without a demanding flex. Summary Ability Upper Beginner - Expert Flex 6/10 Baseplate S1 Step OnA(R) W Duraflex ST Highback S1 Step OnA(R) W Duraflex ST Compatibility 4x2 and Channel (Step OnA(R) Disks) Warranty Lifetime (Baseplate), 1-Year (Parts)