| Article number: | 11010500-GRY-M |
| Availability: | In stock |
DESCRIPTION
Comfort, control, and confidence—right out of the box. The Union STR is a durable, mid-flexing all-mountain binding built for riders ready to take their skills to the next level. With all-day comfort and forgiving response, it’s the perfect choice for beginner to intermediate snowboarders looking to explore more of the mountain and level up every run. Reliable performance meets accessible progression.
RIDING CATEGORY
| Freestyle | ||||||||||
| Good | Great | |||||||||
| All Mountain | ||||||||||
| Good | Great | |||||||||
| Performance | ||||||||||
| Good | Great | |||||||||
| Freeride | ||||||||||
| Good | Great | |||||||||
| Binding Flex | ||||||||||
| 5/10 | Flexy | Rigid |
FEATURES
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S11 Duraflex HighbackThe perfect blend of flex and response for riding the entire mountain. The S11 Duraflex highback is ideal for beginner to intermediate riders looking to up their game. |
Exoframe 3.0 Ankle StrapExoframe 3.0 ankle straps provide a secure and locked in ride feel. Lightweight, super durable and a team and shop favorite. |
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TS 2.1 UltraGrip Toe StrapMulti-Positional options and thermoplastic anti-slip material keep you locked in and on point. The TS 2.1 UltraGrip toe strap is compatible with all boot brands and models. |
Thermoformed EVA FootbedThermoformed EVA padding absorbs impacts and reduces vibration, delivering enhanced comfort and control underfoot. |
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S5 Duraflex BaseplateAll day comfort and response for riding the entire mountain. The bombproof S5 Duraflex baseplate is built to last. Backed by a lifetime warranty. |
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TECHNOLOGY
Baseplate |
S5 Duraflex
|
Bushing |
EXT Thermoformed EVA
|
Heelcup |
Extruded 3D Aluminum
|
Highback |
S11 Duraflex
|
Ankle Strap |
Exoframe 3.0
|
Toe Strap |
TS 2.1 UltraGrip
|
Ratchet |
Aluminum S2 w/ Steel Base
|
FLAD |
Cam-Lock
|
Hardware |
Grade 8.8 Steel
|
Strap Adjustment |
Quick-Lock + Steel Screw
|
Canting |
Yes
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BINDING DETAILS
Suggested Board to Binding Flex

| Soft | Stiff |
Disk Type and Compatibility
|
Camber Disk |
|
4 x 4 |
|
4 x 2 |
|
Channel |
SIZE GUIDE
| MEN’S/UNISEX | - | - | - | SMALL | MEDIUM | LARGE | X-LARGE |
|---|---|---|---|---|---|---|---|
| US Men | - | - | - | 5.5 - 7.5 | 8 - 10 | 10.5 - 13 | 13 - 15 |
| US Women | - | - | - | 6.5 - 8.5 | 9 - 11 | - | - |
| US Kids | - | - | - | 5.5K+ | - | - | - |
| UK | - | - | - | 4.5 - 6.5 | 7 - 9 | 9.5 - 12 | 12 - 14 |
| EURO | - | - | - | 37 - 40.5 | 41 - 43 | 43.5 - 46 | 46 - 48 |
| MONDO | - | - | - | 23.5 - 25.5 | 26 - 28 | 28.5 - 31 | 31 - 33 |




























