Union Women's Astra Step On Snowboard Binding White 2027
Fast in. Fast out. Locked in for total control. The Union Astra Step On® brings the proven convenience of Step On® technology to women's all-mountain performance. Featuring the Step On® Instant Connection® System, the Astra delivers lightning-fast entry and exit without sacrificing response, precision, or power.
Designed specifically for women riders seeking hassle-free convenience without compromising performance, the Astra features adjustable forward lean and gas pedal for customized response. Hi-Flex EVA bushing provides smooth flex and dampening, while the integrated 2-stage flad and extruded 3D aluminum heelcup ensure secure connection and precise power transfer.
Compatible with Step On® boots only, this binding offers the perfect balance of convenience and control for all-mountain adventures.
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Binding Size by Boot Size
Match your boot size to the recommended binding size.
| S | M | L | |
|---|---|---|---|
| US Men | * – 5.5 | 5.5 – 7.5 | 8 – 10 |
| US Women | 4 – 6.5 | 6.5 – 8.5 | 9 – 11 |
| US Kids | 3K – 5.5K | 5.5K+ | – |
| UK | 2 – 4.5 | 4.5 – 6.5 | 7 – 9 |
| EU | 34 – 37 | 37 – 40.5 | 41 – 43 |
| Mondo | 21 – 23.5 | 23.5 – 25.5 | 26 – 28 |
Note: Sizing varies by brand. Check manufacturer specs if between sizes.
Fit Tips
- Your boot heel should sit centered in the binding heelcup
- Straps should reach across your boot without over-extension
- If between sizes, size up for thick boots, down for low-profile
This is a Step On® binding. Standard snowboard boots will NOT work. You need Step On® compatible boots from Burton, Nitro, or other licensed brands. Shop Compatible Boots →
