TuneLug™ engineered outsole with Vibram® Megagrip™, Litebase™, and Traction Lug™.
 Euforia™ super foam midsole with a proprietary PEBA/EVA blend for cushion and rebound.
 Rippy™ 66 high-tenacity monomesh upper for breathable structure.
 Asymmetrical lacing system to relieve Achilles and big toe pressure.
 Dual-width form: D-width heel, E-width forefoot to accommodate natural expansion.
 Serrated laces for a secure, stay-tied fit.
 5 mm insole for precise, performance-focused fit.
 3mm insole for increased internal volume.