Union STR 2025

The 2025 Union STR offers an unbeatable value for all-mountain performance. Featuring upgraded straps and ratchets, it has the same reliable tech normally found on much higher-end bindings and has everything you need in a budget friendly package to help you progress your skills without skimping out on the performance, durability, or comfort you would expect from a Union binding.

Binding Type: All Mountain

Flex: 6/10 (Stiff)

Board Compatibility: Camber Disk, compatible with all 4x4, 4x2 and Channel insert systems.

Baseplate:

Stage 5 Duraflex

Designed as an all-mountain and freeride base, the Stage 5 is lightweight, canted for comfort and power, and offers bomb-proof durability for long lasting performance.

Highback: 

S11 Duraflex

The S11 Duraflex gets the blend of flex and response just right.

Buckles: 

Aluminium S2 w/Steel

A smooth and fast mechanism combined with Union aluminium creates a light and durable ratchet that feels good, looks good, and works even better.

Straps: 

Exoframe 3.0 Ankle Strap + TS 2.1 Tiles Toe Strap

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

The TS 2.1 Tiles toe straps are multipositional straps that are made of a grippy anti-slip rubber that fits perfectly to any boot.

Cushioning:

EXT Thermoformed EVA

EXT Thermoformed EVA bushings offer multiple season durability along with a smoother ride, enhanced comfort, and extra impact and vibration absorption when you need it most.

Additional Features:

Extruded 3D Aluminium Heelcups:

This heelcup increased the stiffness of the binding, increases response, and is adjustable to help you dial in the perfect fit.

Classic Forward Lean Adjuster:

No tools needed for this one, just flick the tab down and slide the panel for more response or a looser feeling ride on the fly.

Grade 8.8 Hardware:

Union ensure their hardware is reliable by using the strongest steel available on the market.

Tool-less strap adjust:

Whether you're letting a friend borrow your bindings or you just need to fine tune your fit, you can adjust your straps on the fly without the need for tools.

Canting:

The footbed of this binding is angled to better align your joints and provide a more natural feeling, less fatiguing ride.