Union Ultra Snowboard Binding - Mens
Union bindings fit all major snowboard boot brands, models and sizes. Find your boot size in the row for your sizing system (US, UK, Euro or Mondo) and read the binding size at the top of that column. Use this as a guide and check the fit with your actual boots when you can.
Strap bindings – Men's / Unisex
| Boot size | Small | Medium | Large | X-Large |
|---|---|---|---|---|
| US Men's | 5.5 – 7.5 | 8 – 10 | 10.5 – 13 | 13 – 15 |
| US Women's | 6.5 – 8.5 | 9 – 11 | — | — |
| US Kids | 5.5K and up | — | — | — |
| UK | 4.5 – 6.5 | 7 – 9 | 9.5 – 12 | 12 – 14 |
| Euro | 37 – 40.5 | 41 – 43 | 43.5 – 46 | 46 – 48 |
| Mondo (cm) | 23.5 – 25.5 | 26 – 28 | 28.5 – 31 | 31 – 33 |
Strap bindings – Women's
| Boot size | Small | Medium | Large |
|---|---|---|---|
| US Women's | 4 – 6.5 | 6.5 – 8.5 | 9 – 11 |
| US Men's | 5.5 and under | 5.5 – 7.5 | 8 – 10 |
| US Kids | 3K – 5.5K | 5.5K and up | — |
| UK | 2 – 4.5 | 4.5 – 6.5 | 7 – 9 |
| Euro | 34 – 37 | 37 – 40.5 | 41 – 43 |
| Mondo (cm) | 21 – 23.5 | 23.5 – 25.5 | 26 – 28 |
Strap bindings – Kids
| Boot size | One | Mini | Small | Medium |
|---|---|---|---|---|
| US Kids | 7C – 11C | 11C – 3K | 3K – 5.5K | 5.5K and up |
| US Women's | — | 4 and under | 4 – 6.5 | 6.5 – 8.5 |
| US Men's | — | — | 5.5 and under | 5.5 – 7.5 |
| UK | 6 – 10 | 10K – 2 | 2 – 4.5 | 4.5 – 6.5 |
| Euro | 24 – 28 | 28 – 34 | 34 – 37 | 37 – 40.5 |
| Mondo (cm) | 13.5 – 17.5 | 17.5 – 21 | 21 – 23.5 | 23.5 – 25.5 |
Step On® bindings – Men's
| Boot size | Small | Medium | Large | X-Large |
|---|---|---|---|---|
| US Men's | 6 – 8 | 8.5 – 10.5 | 11 – 13 | 14 – 15 |
| UK | 5 – 7 | 7.5 – 9.5 | 10 – 12 | 13 – 14 |
| Euro | 38 – 41 | 41.5 – 43.5 | 44 – 46 | 47 – 48 |
| Mondo (cm) | 24 – 26 | 26.5 – 28.5 | 29 – 31 | 32 – 33 |
Step On® bindings – Women's
| Boot size | Small | Medium | Large |
|---|---|---|---|
| US Women's | 5 – 6 | 6.5 – 8.5 | 9 – 11 |
| UK | 3 – 4 | 4.5 – 6.5 | 7 – 9 |
| Euro | 35 – 36.5 | 37 – 40.5 | 41 – 43 |
| Mondo (cm) | 22 – 23 | 23.5 – 25.5 | 26 – 28 |
Step On® bindings work only with Step On® boots, and the wrong binding size for your boot can keep the system from locking in properly — double-check the size before you ride. Based on Union Binding Company's official size guide. Questions? Give us a call and we'll help you find the right fit.
All orders of $50 or more.
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Union
Introducing a new era of board feel—where comfort, response, and suspension work as one. The Union Ultra redefines board feel with a next-generation suspension system that flexes, rebounds, and absorbs impact with every movement. From baseplate to straps, every component is engineered to work in harmony—delivering a smooth, cushioned ride unlike anything you’ve felt before. Lightweight, responsive, and ultra-forgiving, the Ultra is snowboarding evolved.
Straps
TS 5.0 UltraGrip Toe Strap: Multi-Positional options and thermoplastic anti-slip material keep you locked in and on point. The TS 5.0 UltraGrip toe strap is compatible with all boot brands and models.
Hybrid 1.0 Ankle Strap: Instant response meets all day long foot comfort. The Hybrid 1.0 ankle strap's construction combines our responsive Exoframe exterior with the padded comfort and flexibility of the Forma interior. Form fits perfectly to any boot on the market.
Magnesium S1 Ratchets: Magnesium S1 ratchets are Union’s answer to the elements. A fully integrated spring protected from the harsh outside provides you with Union’s best ratchet to date. Longer life span and better spring return guaranteed.
Footbed + Baseplate
S11 Duraflex ST Baseplate: By removing excess material in the toe and heel of the baseplate, and utilizing an asymmetrical shape, we've been able to drastically increase the torsional flex of the binding. The Ultra's S11 Duraflex ST baseplate allows for 360 degree board flex and feel.
Highbacks
Integrated 2-Stage Forward Lean Adjuster: Fine-tune your forward lean angle with a #3 screwdriver to match changing terrain and riding styles.
S25 Duraflex ST Highback: 6 degrees of preloaded forward lean hugs your boot and allows for quick edge to edge response. While the molecular highback bushing provides increased freestyle flex and rebound while riding. This unique highback construction is exclusive to Union Binding Company.
Construction + Materials
TPE Outsole: Exclusive to Union, this 100% new binding manufacturing process requires zero bushing gluing and adds another layer of dampening and vibration canceling material to the Ultra.
Molecular Bushing: Union's Molecular bushing provides spring-loaded take offs and perfectly cushioned landings. 15% lighter than Union Fused Vaporite and guaranteed to minimize foot, ankle and knee fatigue. This is the future of freestyle binding design.
Additional Features
Asymmetrical Mini Disk Baseplate
Union Exclusive Bushing Technology
All-New Highback Design
Ridden by: Arthur Longo and Gigi Rüf
Snowboard
Union
Mens
Freestyle
Medium Flex
Lifetime
Intermediate–Advanced