Featuring the Step On® Instant Connection™ System, the Astra delivers lightning-fast entry and exit without sacrificing response, precision, or power.
Union Binding Company is the only licensing partner developing and producing its own products, which feature the Step On® Instant Connection™ System.
S1 Step On® W Duraflex ST Baseplate
Union strength and dependability + the easy-to-use performance of the Step On® Instant Connection™ System. The engineering team at Union has spent countless hours perfecting the S1 Step On® W Duraflex ST Baseplate. Backed by Union's lifetime warranty guarantee.
Non-Stick HP EVA Footbed
The next evolution of Union's non-stick EVA technology. Non-Stick Hot Press EVA creates a closed-cell, 100% waterproof surface that prevents snow and ice buildup underfoot. Designed to absorb vibration and cushion impacts, it delivers a smoother ride with lasting comfort. Easily adjusts for the perfect fit with your boots.
Hi-Flex EVA Bushing
Hi-Flex EVA bushings act as an additional layer of dampening and shock absorption between you and your snowboard and never loose shape over time. Your knees and feet will thank you.
Step On Instant Connection™ System
Fast in, fast out. The Step On® Instant Connection™ System is the only automatic binding system that meets Union's standards of performance, durability, comfort, and function. Simply step into the binding heel-first to engage the heel clip, then press down on your toes until you hear the clicks. When it's time to get out, pull the lever on the heel of the binding and twist your foot. It's that easy.
Step On Instant Connection™ System
Fast in, fast out. The Step On® Instant Connection™ System is the only automatic binding system that meets Union's standards of performance, durability, comfort, and function. Simply step into the binding heel-first to engage the heel clip, then press down on your toes until you hear the clicks. When it's time to get out, pull the lever on the heel of the binding and twist your foot. It's that easy.
S1 Step On® W Duraflex ST Highback
The S1 Step On® W Duraflex ST Highback combines legendary Union performance with the easy-to-use Step On® Instant Connection™ System. Equipped with two stages of forward lean, you can easily dial in the highback to suit your preferred riding style.
