Fit + Tech
Union Source Unisex Snowboard Binding 2027
2 Sizes (M, L)
Unisex
Balanced All-Mtn
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 bindings come in 2 sizes (M, L) that cover a range of boot sizes — 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. The Source features a more forgiving highback, wider ankle straps, and a nylon baseplate for balanced, all-mountain performance.
Component Breakdown
Balanced All-Mountain Performance
"The Union Source delivers a balanced ride for snowboarders who want dependable performance without the aggressive feel of the Source FC or Source Pro." The Source is designed for the rider who wants one binding that works for all-mountain riding, park laps, and groomer carving — without the aggressive feel of a pro-level setup.
More Forgiving Highback
"A more forgiving highback... that's comfortable, supportive" — the Source's highback is tuned for the rider who wants support and response without the aggressive feel of a stiffer, pro-level highback. The flex is optimized for all-day comfort across a variety of conditions.
Wider Ankle Straps
"Wider ankle straps... distribute pressure more evenly across the boot" for all-day comfort and better response. The Source's strap design balances comfort and performance — providing the support needed for charging while maintaining the comfort needed for park laps and all-mountain cruising.
Nylon Baseplate
"A nylon baseplate create a setup that's comfortable, supportive" — the nylon baseplate is lighter and more forgiving than aluminum, making it the perfect choice for the rider who wants a balanced ride without the aggressive feel of a stiff aluminum baseplate. The Source maintains the close connection between binding and board that Union is known for.
Union Quality
Built by Union — the same brand trusted for premium bindings and gear — the Source reflects the company's commitment to quality, durability, and performance at every price point. The binding is constructed to handle the demands of all-mountain riding, backed by Union's quality assurance.
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 / park / freeride (balanced versatility for any terrain)
- Skill level: Beginner to Advanced (balanced flex and construction for all skill levels)
In the Box
- 1× Pair Union Source Unisex Snowboard Bindings 2027 (selected size: M or L)
- More Forgiving Highback (balanced support and response)
- Wider Ankle Straps (all-day comfort and response)
- Nylon Baseplate (lightweight, close connection to board)
- Manufacturer's care instructions
- Union quality assurance (binding-specific warranty)
Rider Profile
Flex Rating
Best For
Balanced All-Mountain
Skill Level
Beginner – Advanced
Available Sizes
M, L (2 sizes)
Balanced Ride Without the Aggressive Feel — "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 that Union is known for." More Forgiving Highback + Wider Ankle Straps + Nylon Baseplate + Union Quality. 2 sizes (M, L) — unisex sizing designed for the rider who wants one binding that does everything without the aggressive feel of a pro-level setup.
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.
