Cushy comfort or extra bounce? You decide!

Customize your ride with the modular INNERSPACE™ fit system. Choose the base that feels best—Upgrade to the SPACEFRAME™ suspension to add a little spring to every step or replace the included SPACEFOAM™ compression EVA to get that all-day "ahhh" feeling. Both bases interlock perfectly with the super-cushy and supportive EVA foam heelcup. Prefer to hack your own? The modular system let's you adjust and 3D print a custom component.

Features:

• SPACEFRAME™ come in adult size ranges:
  • XS [shoe size 4.5 - 5.5 Mens = 6 - 7 Womens]
  • SM [shoe size 6 - 7 Mens = 7.5 - 8.5 Womens]
  • MD [shoe size 7.5 - 8.5 Mens = 9 - 10 Womens]
  • LG [shoe size 9 - 10 Mens = 10.5 - 11.5 Womens]
  • XL [shoe size 10.5 - 11.5 Mens = 12 - 13 Womens]
  • XXL [shoe size 12 - 14 Mens = 13.5 - 15.5 Womens]
• Sold as a pair for both the left and right shoe, in the color shown
• SPACEFRAME™ is included with some styles but can be used with any adult styles that use the INNERSPACE™ fit system.
• SPACEFOAM™ is included with adult styles that use the INNERSPACE™ fit system.