| 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 |
The Union Source delivers a balanced ride for snowboarders who want dependable performance without the aggressive feel of the Source FC or Source Pro. A more forgiving highback, wider ankle straps, and a nylon baseplate create a setup that’s comfortable, supportive, and still keeps the close connection to the snowboard
Flex: 6/10
Ankle Strap: Hybrid 2.0 Ankle Strap With TPE Core - The Hybrid 2.0 ankle strap features a unique V-cut design that flexes naturally with your boot, allowing for powerful forward lean without pressure points. Engineered for light-weight performance and built to last, it delivers the perfect balance of support and comfort. Trusted by the Union team, the Hybrid 2.0 has quickly earned its place as a go-to favorite on everything from park laps to backcountry lines.
Toe Strap: TS 6.0 Dual-Layer UltraGrip - Separating the exterior toe strap frame and interior rubber grip allows the rubber grip to form fit perfectly to any boot shape on the market today, while a new more integrated toe connector gives the the binding a more finished overall look.
Baseplate: S10 Halo Duraflex CB With Duraflex CB Core - A new addition to Union's 2027 technology, this baseplate uses a more forgiving carbon-injected Nylon construction to provide a more responsive, lightweight feel in order to keep comfort and support a priority within any terrain. Union's lightest baseplate ever.
Non-Stick HP EVA Footbed - Union's non-stick hot press EVA creates a closed cell finish that is 100% waterproof. No more snow and ice build up, keeping you riding in all conditions. Standard hot-press EVA cushioning for reliable shock absorption and underfoot comfort, engineered to maintain shape over time.
Extruded 3D Aluminum Heelcup - Designed for optimal heel hold and reduced drag, Union’s 3D Aluminum Heelcups are lightweight and built to stand the test of time. Backed by a lifetime warranty.
Cushioning: Hi-Flex HP EVA - Hot-press EVA material engineered for high performance. Delivers consistent cushioning, shock absorption, and responsive rebound underfoot while maintaining shape over time. Exclusive to Union bindings.
HighBack: S18 Source Duraflex Blue - Built with an asymmetrical freeride wrap design and Duraflex Blue Eco-Conscious Nylon to provide a perfect balance of strength, responsiveness, and lightweight feel. Made with 90% sustainable raw materials and audited by ISCC and TÜV NORD, Duraflex Blue is Union’s first partially sustainable nylon created from a mass-balance feedstock.
Mounting System: Direct Connect System - A disk-free mounting system using just two screws and washers, reducing weight while providing strong, responsive energy transfer from rider to snowboard.
Buckles: Magnesium S1 With Aluminum Base - Durable Magnesium Construction Fully Protected Spring for Reliable Performance Longer Life Span + Optimized Spring Return