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  • Union 2022 STR Stone

Union 2022 STR Stone

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  •  Stage 5 Duraflex baseplates and STR2 Duraflex highbacks provide balanced support that's not too flexy and not too rigid
  •  EXT thermoformed EVA bushings provide vibration-damping shock absorption to save your heels while promoting true and even board flex
  •  Extruded 3D aluminum heel cups deliver a secure heel hold and minimize drag
  •  Super-durable Exoframe 2.0 ankle straps and TS 1.0 Hexgrip toe straps are wide, grippy and easy to adjust, offering a supportive fit with any boots
  •  Aluminum ratchets allow for fast entry and exit
  •  Toolless flads (forward lean adjusters) are easy to use: simply pull the lever away from the highback to quickly adjust your forward lean angle to suit the terrain ahead
  •  Grade 8.8 steel hardware offers impressive strength and reliability
  •  Canted footbeds
  •  Union offers a lifetime warranty on baseplates and heel cups, even if they are broken or cracked while riding; all other parts are covered for 1 year after purchase


Technical Specs
Best Use


Riding Style


Binding Flex

Medium Flex

Fits Boot Sizes

M: Men's 8-10 / Women's 9-11

L: Men's 10.5-14 / Women's 11+

Base Material

Fiberglass/nylon composite

Highback Material

Fiberglass/nylon composite



Bolt Pattern






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