Multi-Density Thermoformed EVA Bushings – Multi-Density Thermoformed Bushings sustain their function season after season - unlike competitors who use urethane, rubber or other materials that change color and become brittle over time.

CP3 Duraflex Base - MD – One of the lightest bindings ever produced, the Contact Pro focuses the strength of Duraflex ST in critical areas of the base for power and Vaporlite dampening underfoot for cushioned comfort. With a mere 5% binding-to-board contact area, the Minidisk Base enhances natural board flex, boosting performance and overall durability.

Asym S2 Highback – These highbacks are designed for season-long tweakability and comfort with a sturdy soul.

Ultragrip Toe Straps – Multi-positional options and thermoplastic anti-slip material keeps you locked in and on point.

Classic Lite Ankle Strap – Once featured on Union's most expensive models, the Classic Lite Ankle Strap is a prime example of how primo technology finds its place in the Union Collection. Tried, tested, and true.

Aluminum Ratchets – Fast in and fast out - this mechanism combined with Union aluminum is superior to any binding ratchet on the market - with the exception of Union magnesium.

Extruded 3D Aluminum Heelcups – The rigidity and strength of Extruded Aluminum act like a roll cage on a race car - stiffening the entire chassis. The male/female connection with the base provides a seamless response.

Mini Disk – Compatible with 4x2 and The Channel™.