Free shipping for US orders $75+

Union STR
Union STR
Union STR
Union STR
Union STR
Union STR
Union STR
Union STR
Union STR
Union STR
Union STR
Union STR
Union STR
Union STR
Union STR
Union STR
Model Information

Union STR

Men's Snowboard Binding

Regular price
$299.95
Sale price
$299.95
Regular price
$299.95
Sold out
Unit price
per 
Shipping calculated at checkout.
S M L
Size Chart
Only 24 left Only 195 left Only 220 left Only 7 left Only 129 left Only 155 left Only 7 left Only 55 left Only 62 left Only 16 left Only 118 left Only 152 left

Find My Size | Based on Men's Size Chart arrow icon union

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
4-6.5
6.5-8.5
9-11
2-4.5
4.5-6.5
7-9
34-37
37-40.5
41-43
21-23.5
23.5-25.5
26-28
11C-3K
3K-5.5K
5.5K+
10K-2
2-4.5
4.5-6.5
28-34
34-37
37-40.5
17.5-21
21-23.5
23.5-25.5
YOUR SIZE IS: Mini XS S M L XL

Must select color and size.

FREE SHIPPING ALL US ORDERS $75+

Specifications

Key Features

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Union STR
exoframe bindings

Stage 5 Duraflex Baseplate

All day comfort and response for riding the entire mountain. The bombproof Stage 5 Duraflex baseplate is built to last. Backed by a lifetime warranty.

Baseplate Flex

Flexy
Rigid
exoframe bindings

S11 Duraflex Highback

The perfect blend of flex and response for riding the entire mountain. The S11 Duraflex highback is ideal for beginner to intermediate riders looking to up their game.

Highback Flex

Flexy
Rigid
exoframe bindings

Exoframe 3.0 Ankle Strap

Exoframe 3.0 ankle straps provide a secure and locked in ride feel. Lightweight, super durable and a team and shop favorite.

Anklestrap Flex

Flexy
Rigid

TS 4.0+ Toe Strap

The all-new TS 4.0+ toe strap keeps you locked in for the ride down without letting you know it’s there. A new shorter buckle base helps to reduce weight and pressure points. Easily adjust to any boot with the quick snap of the pin adjustment, no tools needed.

Magnesium S1 Ratchets

The all-new Magnesium S1 ratchets are Union’s answer to the elements. A fully integrated spring protected from the harsh outside provides you with Union’s best ratchet to date. Longer life span and better spring return guaranteed.

Forged Carbon Gas Pedal

The Atlas FC's Forged Carbon gas pedal provides instant edge-to-edge response for charging the most technical lines and powering through hard carves. Extremely lightweight and only available from Union Binding Company.

B4BC

Sales: 2% Per B4BC Binding Sold is Donated Back to Boarding For Breast Cancer.

Split flad 2.0

Fast and easy. Quickly switch from touring mode to ride mode in the blink of an eye. The new Explorer Split Forward Lean Adjuster (FLAD for short) has been upgraded for improved durability and easier transition with gloves.

Specifications

Binding Details

Technology
Baseplate
Stage 5 Duraflex
All day comfort and response for riding the entire mountain.
Bushing
EXT Thermoformed EVA
Shock absorbing EVA padding saves your heels and promotes a true and even board flex.
Heelcup
Extruded 3D Aluminum
Designed for optimum heel hold and minimization of drag. Lifetime warranty.
Highback
S11 Duraflex
Comfortable, responsive and ready to carve up the mountain.
Ankle Strap
NEW Exoframe 3.0
Lightweight, super durable and provide a locked in ride feel.
Toe Strap
NEW TS 2.1 Tiles
Multi-Positional options, thermoplastic anti-slip material and fits to any boot.
Ratchet
NEW Alu S2 w/ Steel
Fast in, fast out - Union aluminum ratchets are easy to use and made to stand the test of time.
FLAD
Tool-Less
Quickly adjust your forward lean angle to suit the terrain in front of you.
Hardware
Grade 8.8 Steel
The strongest steel available on the market.
Strap Adjustment
Tool-Less
Easily Adjust With A #3 Screw Driver
Canting
Yes
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

Camber Disk

disk bindings

4x4

disk bindings

4x2

disk bindings

Channel

Product Video

Union Exclusive Test Environment

Technological Innovations

Union Exclusive Test Environment
Union Headquarters is located a quick 45 minute drive from the closest gondola. Living and working in the heart of the Italian Alps gives us the opportunity to test in the morning, be back in the office by lunch, adjust / modify designs by the end of the day.

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01. General Info:

Select
Men
Women
Kids

Find My Size | Based on 's Size Chart arrow icon union

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
4-6.5
6.5-8.5
9-11
2-4.5
4.5-6.5
7-9
34-37
37-40.5
41-43
21-23.5
23.5-25.5
26-28
11C-3K
3K-5.5K
5.5K+
10K-2
2-4.5
4.5-6.5
28-34
34-37
37-40.5
17.5-21
21-23.5
23.5-25.5
YOUR SIZE IS: Mini XS S M L XL

02. Riding Ability:

union bindings finderunion bindings finderBEGINNER
union bindings finderunion bindings finderINTERMEDIATE
union bindings finderunion bindings finderADVANCED

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:

union loader
UNION BINDING CO. 2024/25
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all fields.