The 2019 Union Expedition is a brand new split board binding made by snowboarders, for snowboarders. The Expedition is the result of years of research and development, along with rigorous testing performed by legendary backcountry riders Travis Rice and Bryan Iguchi, and has been built to give any boarder the best and most convenient platform for any split board mission, be it your first day or 20th season. The unique design of the Expedition allows it to be converted from climb mode to ride mode in record time, works to maintain the torsional flex of your snowboard for predictable and consistent response, and makes it compatible with your entire quiver of boards, not just your split board. Featuring parts and materials you'll find on other popular bindings throughout the Union line, the Expedition brings famous Union performance to be backcountry and beyond. 



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Size Charts

Key Features

Flex: 7/10 - Medium/stiff (1=Soft 10=Stiff) All Mountain.

Board Compatibility: Compatible with Voile and 4x2 DIY mounting systems .

Baseplate: Duraflex ST SP1 Base

Developed and tested by Travis Rice and Bryan Iguchi, the Expedition baseplate is once injected with Duraflex ST nylon, bumping up the stiffness for enhanced response.

High Back: Force EXP Highback

These highbacks have been designed specifically for touring, featuring an adjustable quick-snap forward lean adjuster that changes from tour to ride mode in an instant.

Buckles: Magnesium Ratchets

A construction process completely unique to Union allows them to make their ratchets out of Magnesium, resulting in a product that is 4 times stronger than aluminium while being half the weight. Not only that, it's easily recycled so the environment benefits too.

Straps: Forma Ankle Straps + Ultragrip Toe Strap

The new Forma ankle strap produces strength and rapid response from the outside, fit and pillowed comfort from the inside. The Ultragrip Toe Strap offers multi-positional functionality and superior grip with a simple, highly durable design. 

Cushioning: Non-Stick Synthetic EVA Bushings

These Synthetic EVA bushings are shock absorbing, durable, and complement the smooth, natural ride of the Duraflex ST SP1 Base, and are treated with Unions new non-stick coating, preventing snow and ice buildup in all conditions. 





Men's boot size: US 8-11 // UK 7-10 // Euro 40.5 - 44 // Mondo 26 - 29

Women's boot size: US 8.5 - 11


Men's boot size: US 10+ // UK 9+ // Euro 43+ // Mondo 28+

  • Need a size we don't have? Just ask us to find out if we can get more!
  • Not sure which binding size to get? Check out our binding size chart here.