Fit + Tech
Union Source Pro Th Unisex Snowboard Binding 2027
2 Sizes (M, L)
Unisex
Pro-Level Freestyle
Size Chart (Boot Compatibility)
| Size | US Men | US Women | US Kids | UK | EU | Mondo |
|---|---|---|---|---|---|---|
| S | 5.5 - 7.5 | 6.5 - 8.5 | 5.5K+ | 4.5 - 6.5 | 37 - 40.5 | 23.5 - 25.5 |
| M | 8 - 10 | 9 - 11 | — | 7 - 9 | 41 - 43 | 26 - 28 |
| L | 10.5 - 13 | — | — | 9.5 - 12 | 43.5 - 46 | 28.5 - 31 |
| XL | 13 - 15 | — | — | 12 - 14 | 46 - 48 | 31 - 33 |
Size chart data pulled directly from the product page (boot compatibility for the binding sizes M, L). The Source Pro Th comes in 2 sizes (M, L) — M fits US Men 8-10 / US Women 9-11 / EU 41-43, and L fits US Men 10.5-13 / EU 43.5-46. Also available in S (US Men 5.5-7.5) and XL (US Men 13-15) for some configurations. Features the new highback and cushioned Hybrid 3.0 ankle straps for pro-level freestyle performance.
Component Breakdown
Designed with Torstein Horgmo
"Designed with Torstein Horgmo, the all-new Union Source Pro TH blends freestyle freedom with pro-level performance." Horgmo's input shaped the binding's design — combining his freestyle-focused riding style with Union's pro-level construction. Built for riders who want precision with freestyle freedom.
New Highback Design
"A new highback gives it a more playful, freestyle-focused feel" — the Source Pro TH's highback is designed to work with the rider's natural movement, not against it. The flex and response is tuned for park, jib, and all-mountain freestyle riding while still delivering the support needed for charging and technical lines.
Cushioned Hybrid 3.0 Ankle Straps
"Cushioned Hybrid 3.0 ankle straps deliver the perfect balance of comfort, control, and response." The Hybrid 3.0 is Union's premium strap option — cushioned for all-day comfort while still delivering the support and power transfer needed for aggressive riding.
Pro-Level Response
"Built for riders who want precision with the freedom of freestyle" — the Source Pro TH delivers pro-level response and control — the kind of precision that Union team riders like Torstein Horgmo demand. Built for the most demanding riding.
Union Quality
Built by Union — the same brand trusted for premium bindings and gear — the Source Pro TH reflects the company's commitment to quality, durability, and pro-level performance. The binding is constructed to handle the demands of the highest level of riding.
Mounting & Compatibility
- Mounting: Compatible with all major binding mounting systems (4x4 and 2x4 insert patterns, plus Channel with adapter)
- Binding compatibility: Works with all snowboard boots — no specific boot required
- Use: All-mountain / freestyle / park (designed with Horgmo's freestyle-focused approach)
- Skill level: Advanced to Expert (pro-level construction, designed for skilled riders)
In the Box
- 1× Pair Union Source Pro Th Unisex Snowboard Bindings 2027 (selected size: M or L)
- New Highback Design (designed with Torstein Horgmo, freestyle-focused feel)
- Hybrid 3.0 Ankle Straps (cushioned, pro-level comfort and response)
- Baseplate (Union's pro-level baseplate design)
- Manufacturer's care instructions
- Union quality assurance (binding-specific warranty)
Rider Profile
Flex Rating
Best For
Pro-Level Freestyle, All-Mountain
Skill Level
Advanced – Expert
Available Sizes
M, L (2 sizes)
Pro-Level Freestyle Built with Torstein Horgmo — "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." New Highback Design + Cushioned Hybrid 3.0 Ankle Straps + Pro-Level Response + Union Quality. 2 sizes (M, L) — unisex sizing designed for pro-level freestyle performance with precision and freestyle freedom.
Prepared with intention.
Every product is carefully inspected and handled by our team before it ships. From fit and function to final details, we make sure each piece is ready for the outdoors ahead—so you can focus on the experience, not the gear.
Passion drives us
At SpokeX Bike Co., bikes aren't just our business — they’re our way of life. As a rider-owned and operated shop, every decision we make comes from firsthand experience on the trail, at the race, and on the open road. We know what it’s like to chase a new line, push through the pain cave, and celebrate the ride — because we live it every day.
