| 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 |
Designed with Torstein Horgmo, the all-new Union Source Pro TH blends freestyle freedom with pro-level performance. A new highback gives it a more playful, freestyle-focused feel, while cushioned Hybrid 3.0 ankle straps deliver the perfect balance of comfort, control, and response. Built for riders who want precision without restriction.
Flex: 7/10
Ankle Strap: Hybrid 3.0 Ankle Strap With HP Core - Lightweight and responsive, the Hybrid 3.0 ankle strap features a hot-press EVA core for cushioning and comfort. Its all-new hinge connector makes getting in and out of the binding effortless.
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 Baseplate With FC Core - Two-layer baseplate construction pairs an ultralightweight Forged Carbon Core with a Duraflex CB Frame, delivering maximum strength, response, and board feel in the lightest baseplate Union has ever built.
Forged Carbon Footbed - Ultra-Lightweight + Hyper-Responsive Reduced Height for Maximum Board Connection Fastest Edge-to-Edge Energy Transfer Possible
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 TH Duraflex Blue Highback - Asymmetrical freeride wrap design delivers targeted support and board response. The integrated 3-stage forward lean adjustment allows riders to fine-tune their stance for maximum control in any terrain.
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