Description
Tech Info
Size chart
2027 Union Astra Step On® Snowboard Bindings
The 2027 Union Astra Step On® brings the convenience of Burton’s Step On® 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 On® 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 On® 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 On® W Duraflex ST |
| Highback | S1 Step On® W Duraflex ST |
| Compatibility | 4x2 and Channel (Step On® Disks) |
| Warranty | Lifetime (Baseplate), 1-Year (Parts) |
Baseplate
- S1 Step On® W Duraflex ST Baseplate – Lightweight and forgiving construction designed for smooth, comfortable all-mountain riding.
- Hi-Flex HP EVA Bushing – Provides vibration dampening and a softer, more forgiving ride feel.
- Non-Stick HP EVA Footbed – Cushioned, snow-shedding footbed that maintains consistent performance in all conditions.
- Step On® Disk System – Includes 4x2 and Channel compatible disks designed specifically for the Step On® interface.
Highback
- S1 Step On® W Duraflex ST Highback – Medium-flex design that offers a comfortable, supportive feel for all-mountain riding.
- Integrated 2-Stage FLAD – Tool-free forward lean adjustment for dialing in response and comfort.
Step On® System
- Step On® Instant Connection™ – Quickly and securely lock into your bindings without straps for fast entry and exit.
- Boot-to-Binding Interface – Designed for use with Step On® compatible boots, creating a consistent and secure connection.
Flex
- 6/10 – Balanced flex that prioritizes comfort and control, making it easy to ride while still offering dependable response.
Additional Features
- Extruded 3D Aluminum Heelcup – Durable construction for consistent performance and proper boot alignment.
- Grade 8.8 Steel Hardware – Reliable hardware built for long-term use.
- Women’s-Specific Design – Tuned for a comfortable fit and balanced ride feel.
Size Chart
| Size | US Women's | EURO | Mondo (cm) |
|---|---|---|---|
| Small | 5.0 – 6.0 | 35.0 – 36.5 | 22.0 – 23.0 |
| Medium | 6.5 – 8.5 | 37.0 – 40.5 | 23.5 – 25.5 |
| Large | 9.0 – 11.0 | 41.0 – 42.0 | 26.0 – 27.0 |
Need Expert Advice?
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