Union Astra Step On® White 2027 Snowboard Binding

The Union Astra Step On® is a women’s snowboard binding built for riders who want the speed and simplicity of Step On® entry with a balanced all-mountain feel. It is designed around the Step On® Instant Connection™ System, delivering fast entry and exit while maintaining a precise, locked-in connection to the board. For riders moving between groomers, side hits, variable terrain, and longer resort days, the Astra positions itself as a responsive, versatile option with a medium flex profile.

With a stated flex rating of 6/10, the Astra sits in a controlled middle ground. It offers enough support for strong edge-to-edge input and confident board control, without pushing fully into a rigid, demanding feel. That makes it well suited to riders who want one binding to cover different riding styles across the mountain. Union also places it across freestyle, all mountain, performance, and freeride categories, reinforcing its broad use case rather than a narrow, discipline-specific setup.

The platform is built around the S1 Step On® W Duraflex ST baseplate and matching S1 Step On® W Duraflex ST highback. Union pairs this with a Hi-Flex HP EVA bushing, Extruded 3D Aluminum heelcup, and Non-Stick HP EVA gas pedal. On snow, that translates to a construction aimed at dependable power transfer, consistent support, and practical day-to-day use. Adjustment is also part of the package, with both adjustable forward lean and an adjustable gas pedal for fine-tuning fit and stance feel.

Compatibility is specific and should be noted clearly, Step On® bindings are only compatible with Step On® boots. The Astra uses a Step On® 4x2 Disk + Washer and includes a Step On® Channel Disk, with listed compatibility for 4x2 and Channel board mounting systems.

At 1.60 kg, the Astra remains in line with a modern resort-focused binding built for regular use. Union backs the construction with its stated warranty structure, lifetime for baseplate and heelcup, and 2 years for everything else. In this white version, the Astra combines a clean visual finish with a system-led design focused on quick transitions, reliable connection, and all-mountain usability.

• Model, Union Astra Step On®
• Category, Women’s snowboard binding
• System, Step On® Instant Connection™ System
• Flex, 6/10
• Weight, 1.60 kg
• Baseplate, S1 Step On® W Duraflex ST
• Highback, S1 Step On® W Duraflex ST
• Bushing, Hi-Flex HP EVA
• Heelcup, Extruded 3D Aluminum
• FLAD, Integrated 2-Stage
• Hardware, Grade 8.8 Steel
• Gas Pedal, Non-Stick HP EVA
• Canting, No
• Adjustments, Adjustable forward lean, adjustable gas pedal
• Disk options, Step On® 4x2 Disk + Washer, Step On® Channel Disk
• Board compatibility, 4x2, Channel
• Boot compatibility, Step On® boots only
• Available sizes, S, M, L
• Color, White
• Warranty, Lifetime for baseplate / heelcup, 2 years for everything else