Union Women's Trilogy All Mountain Snowboard Bindings 2021DESCRIPTION: Take on the entire mountain and more with the Union Trilogy. FEATURES: Extruded 3D Aluminum Heelcups Designed for optimum heel hold and minimization of drag, Union 3D Extruded Aluminum heelcups are the strongest in the business. 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 Stage 4 Duraflex ST Simply put,