Baseplate Stage 6 | 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. OTE Fused Vaporlite Bushings – OTE Fused Vaporlite bushings set new standards for cushioning and vibration dampening. Fused Vaporlite is the future of precise manufacturing. 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 Highback Strata | Duraflex ST – Light and asymmetrical, the Strata Highback is responsive and tweakable for whole mountain domination. 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. Push-Pin FLAD – Rotate center of FLAD 90 degrees push and slide to your preferred setting. Only available on the Strata and Legacy. Flex Baseplate Stiffness – 6/10 Highback Stiffness – 7/10 Straps Hexgrip Toe Strap with Secure Lock – 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. Forma LAB Ankle Strap - New for 2021! Tool-less Strap Adjustment Buckles Magnesium – Union's proven bombproof ratchet system, Magnesium buckles are light, sleek, and durable on the mountain.