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Union Source Pro TH
Union Source Pro TH
Union Source Pro TH
Union Source Pro TH
Union Source Pro TH
Union Source Pro TH
Union Source Pro TH
Union Source Pro TH
Union Source Pro TH
Union Source Pro TH
Model Information

Union Source Pro TH

Unisex Snowboard Binding

699,95 €
699,95 €
Sold out
Tax included. Shipping calculated at checkout.
Black
M L
Size Chart
Only 2 left Only 0 left
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Select
MEN
WOMEN
Select
US
EURO
UK
MONDO
Select
*-5.5
5.5-7.5
8-10
10.5-13
13-15
2-4.5
4.5-6.5
7-9
9.5-12
12-14
34-37
37-40.5
41-43
43.5-46
46-48
21-23.5
23.5-25.5
26-28
28.5-31
31-33
6.5-8.5
9-11
4.5-6.5
7-9
37-40.5
41-43
23.5-25.5
26-28
YOUR SIZE IS: One Mini XS S M L XL
Must select color and size.

Free shipping for orders over 139€

Main Information

Union Source Pro TH

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.

Riding Category
Freestyle Rating: Freestyle bindings are designed for riders looking for the ultimate freedom, comfort and that “loose truck” feel. These bindings are generally best suited for riding park or riders looking for a more soft and surfy board feel.

All Mountain Rating: All Mountain bindings are generally mid-flexing and built to handle all terrain and all riding styles.

Performance Rating: Performance bindings are stiffer, provide instant edge-to-edge response, and the most stable board connection possible. Performance bindings are generally best suited for high speed carving or ridding steep technical terrain.

Freeride Rating: Freeride bindings are built for off-piste exploration, deep powder, and challenging backcountry conditions. They combine support, comfort, and responsiveness, allowing riders to tackle variable snow and steep terrain with confidence.
freestyle
Freestyle
Good
Great
freestyle
All Mountain
Good
Great
freestyle
Performance
Good
Great
freeride
Freeride
Good
Great
KEY FEATURES
  • Direct Connect Mounting System
  • Italian-Made Forged Carbon
  • All-New Hinge Ankle Strap Connector
  • Ridden by: Torstein Horgmo
Weight
All listed binding weights area based on a size medium full pair, including disks and hardware. Actual product weight may vary by +/- 1%, and slight differences can occur between colorways.

1.40 KG

Binding Flex
Union Bindings come in a variety of flex ratings. The baseplate, highback, straps, bushing and disk all have different stiffnesses to help give a specific ride feel and function. Softer flexing bindings are generally used for more surfy or freestyle riding, while stiffer bindings are generally used for more hard charging and responsive freeriding.

Overall Flex - 7/10

FLEXY
RIGID
warranty union
THE UNION WARRANTY Lifetime for baseplate / heelcup,
2 year for everything else.
Rider: Torstein Horgmo
Filmer: Kevin Nolan
Key Features

Direct Connect Mounting System

Ultra-Lightweight Design

A disk-free mounting system using just two screws and washers, reducing weight while providing strong, responsive energy transfer from rider to snowboard.

Two-Layer Baseplate Construction

Maximum Strength + Response

Two-layer baseplate construction pairs an ultralightweight Forged Carbon Core with a Duraflex XC Frame, delivering maximum strength, response, and board feel in the lightest baseplate Union has ever built.

Duraflex XC Halo Baseplate Frame

Duraflex CB Carbon-Injected Nylon

The Duraflex XC Halo Baseplate Frame is lightest baseplate Union has ever created, while still maintaining the mandatory strength-to-weight ratios needed to pass Union’s strict durability tests. The frame also plays the critical role of connecting the baseplate core, bottom bushing, heelcup, ankle and toe straps together. Made with partially sustainable carbon injected Duraflex XC Nylon.

Forged Carbon Baseplate Core

Ultra-Lightweight + Hyper Responsive

The Forged Carbon DCS Baseplate Core is stiff, responsive, and ultra-lightweight. Through extensive rounds of R&D the Union Lab was able to reduce the baseplate height by 10% getting you as close to the topsheet as possible. This baseplate layer allows for the fastest possible transfer of energy from the rider to the snowboard that Union has ever achieved. Made possible by Union exclusive Forged Carbon.

Hi-Flex HP EVA Bushing

Cushioning + Sock Absorption

More durable and more cushioned than traditional thermoformed EVA. Hi-Flex EVA bushings act as an additional layer of dampening and shock absorption between you and your snowboard and never lose shape over time. This reduced volume bushing design allows the rider to be as close to the topsheet as possible.

S18 Source TH
Duraflex Blue Highback

Asymmetrical Freeride Wrap Design

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.

Hybrid 3.0 Ankle Strap

Lightweight + Responsive Support

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.

Dual-Layer UltraGrip Toe Strap

Thermoplastic Anti-Slip Design

Separating the exterior toe strap frame and interior rubber grip allows the strap to form-fit seamlessly to any boot shape on the market for superior grip and response.
Specifications

Binding Details

Technology
Baseplate
NEW S10 Halo Duraflex XC w/ FC Core
Union exclusive two-layer basesplate construction allows for the best connection to the snowboard.
Bushing
NEW Hi-Flex HP EVA
A responsive, waterproof, and vibration canceling layer between the baseplate and your snowboard.
Heelcup
NEW Extruded 3D Aluminum
Designed for optimum heel hold and minimization of drag. Lifetime warranty.
Highback
NEW S18 Source TH Duraflex Blue Highback
Asymmetrical freeride wrap design delivers targeted support and board response.
Ankle Strap
NEW Hybrid 3.0 Ankle Strap w/ HP Core
Lightweight and responsive, the Hybrid 3.0 ankle strap features a hot-press EVA core for cushioning and comfort.
Toe Strap
NEW TS 6.0 Dual-Layer UltraGrip
Multi-Positional options, thermoplastic anti-slip material and fits to any boot.
Ratchet
NEW Magnesium S1 w/ Aluminum Base
Union's newest ratchet - Longer life span and better spring return guaranteed.
FLAD
NEW Integrated 3-Stage
Easily adjust your forward lean angle with a #2 screw driver.
Hardware
NEW Grade 8.8 Steel + Titanium
The strongest steel and titanium available on the market.
Footbed
Forged Carbon
Instant edge-to-edge response. Prevents snow and ice build up under boots.
Strap Adjustment
NEW Pins + Quick-Lock
Easy to adjust. Extremely lightweight.
Suggested Board to Binding Flex

Boards and bindings come in a variety of stiffnesses for different types of riding. Every rider has their own preference on how a board and binding should interact. Below is Union's suggestion of board to binding flex.

suggested board bindings suggested board bindings
Soft
Stiff
Disk Type and Compatibility
disk bindings

Direct Connect Mounting System

disk bindings

4x2

disk bindings

Freedom Groove

Product Video
Images

Gallery

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union Union Source Pro TH
union Union Source Pro TH
union Union Source Pro TH
union Union Source Pro TH
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Compare features and technical specifications.

BINDING COMPARE
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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
WOMEN’S - - SMALL MEDIUM LARGE - -
US Men - - * - 5.5 5.5 - 7.5 8 - 10 - -
US Women - - 4 - 6.5 6.5 - 8.5 9 - 11 - -
US Kids - - 3K - 5.5K 5.5K+ - - -
UK - - 2 - 4.5 4.5 - 6.5 7 - 9 - -
EURO - - 34 - 37 37 - 40.5 41 - 43 - -
MONDO - - 21 - 23.5 23.5 - 25.5 26 - 28 - -
KIDS ONE MINI SMALL MEDIUM - - -
US Men - - * - 5.5 5.5 - 7.5 - - -
US Women - * - 4 4 - 6.5 6.5 - 8.5 - - -
US Kids 7C - 11C 11C - 3K 3K - 5.5K 5.5K+ - - -
UK 6 - 10 10K - 2 2 - 4.5 4.5 - 6.5 - - -
EURO 24 - 28 28 - 34 34 - 37 37 - 40.5 - - -
MONDO 13.5 - 17.5 17.5 - 21 21 - 23.5 23.5 - 25.5 - - -
CROSSOVER SIZING
MEN'S
 - - - SMALL MEDIUM LARGE X-LARGE
US Men's Boot Size - - - 6 - 8 8.5 - 10.5 11 - 13 14 - 15
UK Boot Size - - - 5 - 7 7.5 - 9.5 10 - 12 13 - 14
CM Boot Size - - - 24 - 26 26.5 - 28.5 29 - 31 32 - 33
EU Boot Size - - - 38 - 41 41.5 - 43.5 44 - 46 47 - 48
Mondo Boot Size - - - 240 - 260 265 - 285 290 - 310 320 - 330
WOMEN'S
 - - - SMALL MEDIUM LARGE -
US Women's Boot Size - - - 5 - 6 6.5 - 8.5 9 - 11 -
UK Boot Size - - - 3 - 4 4.5 - 6.5 7 - 9 -
CM Boot Size - - - 22 - 23 23.5 - 25.5 26 - 28 -
EU Boot Size - - - 35 - 36.5 37 - 40.5 41 - 43 -
Mondo Boot Size - - - 220 - 230 235 - 255 260 - 280 -

STEP ON® bindings are ONLY compatible with STEP ON® boots. Do not use either product with non-STEP ON® boots or non-STEP ON® bindings. Consult the size chart to ensure that you have the correct size binding for your boot size. Pairing incompatible size boots with bindings may lead to malfunction and could compromise your safety. Women’s and Men’s sizing are based on different size standards. Combining men’s and women’s STEP ON® products will result in malfunction and could compromise your safety.

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01. General Info:

Select
Men
Women
Kids
Find My Sizearrow icon union
Select
MEN
WOMEN
Select
US
EURO
UK
MONDO
Select
*-5.5
5.5-7.5
8-10
10.5-13
13-15
2-4.5
4.5-6.5
7-9
9.5-12
12-14
34-37
37-40.5
41-43
43.5-46
46-48
21-23.5
23.5-25.5
26-28
28.5-31
31-33
6.5-8.5
9-11
4.5-6.5
7-9
37-40.5
41-43
23.5-25.5
26-28
YOUR SIZE IS: One Mini XS S M L XL

02. Riding Ability:

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03. Riding Style:

FREERIDE
Steep, Deep, Hard Charging
ALL MOUNTAIN / FREESTYLE
Soft and surfy carving
ALL MOUNTAIN
Ride any terrain
STREET / JIBBING
Maximum freestyle flex
ALL MOUNTAIN / FREERIDE
Destroy the resort
CARVING / BOARDERCROSS
Instant edge-to-edge response
FREESTYLE / PARK
Jumps, rails, and pipe
SPLITBOARDING
Climb Up, Ride Down

04. Our Recommendation:

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Free Gift With
Any Binding Purchase

Gift pack includes a limited-edition Mizu x Union M8 water bottle, custom Union ice scraper, Union multi-tool, and Union Force air freshener.
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*Offer valid while supplies last. Cannot be combined with other promotions, discounts, or incentive programs. Terms and conditions subject to change without notice.

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