Stage 4 | Duraflex ST – Simply put, Duraflex ST is the same material as regular Duraflex, but with increased glass for more response without the weight. Designed for cold temperatures.

Multi-Density Thermoformed EVA – Multi-density bushings sustain their function each season - unlike urethane rubber or other materials that change color and become brittle over time.

Extruded 3D Aluminum Heelcups – Designed for optimum heel hold and minimization of drag, Union 3D Extruded Aluminum heelcups are the strongest in the business.

Canted Footbeds

Baseplate Flex – 7 (1 Soft - 10 Stiff)

Force | Duraflex ST – Simply put, Duraflex St is the same material as regular Duraflex, but with increased glass for more response without the weight. Designed for cold temperatures.

Classic FLAD – Pull the lever away from the highback and quickly adjust your forward lean angle to suit the terrain in front of you.

Highback Flex – 7 (1 Soft - 10 Stiff)

ExoFrame 4.0 Ankle Strap – Rapid response, trusted by professional snowboarders.

2.0 Rhombus Toe Strap – Multi-positional options and thermoplastic anti-slip material keeps you locked in and on point. Each version has differing amounts of material based on weight. Toe strap adjustment has been redesigned and reinforced with double the connection strength, thanks to the new pin system.

Tool-less Strap Adjustment

Strap Flex – 7 (1 Soft - 10 Stiff)

Magnesium – Union's proven bombproof ratchet system, Magnesium buckles are light, sleek, and durable on the mountain.

Grade 8.8 Hardware – The strongest steel available on the market, Union's use of Grade 8.8 represents a commitment to delivering the strongest and most reliable bindings on the market today.

Camber Disk – 2x4, 4x4, and Channel compatible.