Union Men's STR Binding Mustard 2025
Union Men's STR Binding Mustard 2025
SKU:210000173017
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Union Men's Binding Size Guide
| Boot Size | x-Small | Small | Medium | Large | X-Large |
|---|---|---|---|---|---|
| US Men | * - 5.5 | 5.5 - 7.5 | 8 - 10 | 10.5 - 13 | 13 - 15 |
| US Women | 4 - 6.5 | 6.5 - 8.5 | 9 - 11 | - | - |
| US Kids | 3K - 5.5K | 5.5K+ | - | - | - |
| Mondo Point (cm) | 21 - 23.5 | 23.5 - 25.5 | 26 - 28 | 28.5 - 31 | 31 - 33 |
| Euro | 34 - 37 | 37 - 40.5 | 41 - 43 | 43.5 - 46 | 46 - 48 |
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BEHIND THE PRODUCT
BEHIND THE PRODUCT
All-day comfort with enough control to enjoy the entire mountain. The Union STR is a durable, mid-flexing, all mountain men’s snowboard binding designed for beginner to intermediate snowboarders looking to push their snowboarding to the next level.
TECHNICAL SPECS
TECHNICAL SPECS
PRODUCT FEATURES
PRODUCT FEATURES
Key Features:
- Materials - Grade 8.8 steel
- Ratchets - Aluminum S2 w/ Steel
- Heelcup - Extruded 3D Aluminum
- Disk Cover - Thermoformed EVA
- Bushing - EXT Thermoformed EVA
- Adjustability - Tool-less strap adjustment, highback rotation
- Forward Lean - Adjustable
- Canting - Yes
- Mounting System - Camber Disk, 2x4, 4x4, Channel, 3D
- Flex - 6
In-depth Tech Specs:
- S11 Duraflex Highback - The 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 Strap - Exoframe 3.0 ankle straps provide a secure and locked-in ride feel. Lightweight, super durable and a team and shop favourite.
- 2.1 Tiles Toe Strap - Simple, lightweight, durable. All-new shorter buckle base.
- Thermoformed EVA Footbed - Shock-absorbing EVA padding saves your heels and promotes a true and even board flex.
- Stage 5 Duraflex Baseplate - All-day comfort and response for riding the entire mountain. The bombproof Stage 5 Duraflex baseplate is built to last.
EXTENDED HOLIDAY RETURN POLICIES
EXTENDED HOLIDAY RETURN POLICIES
Product purchased online or in-store between November 15, 2024 and December 24, 2024, may be returned or exchanged until January 24, 2026. The original receipt is required and full refunds will be processed back to original form of payment.
Items purchased after December 24, 2025 are subject to our regular returns & exchange policy.
Returns and Exchanges – The Source Snowboard & Skate
Items marked as Final Sale are not eligible for refund or exchange.

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