Lightweight, breathable mesh upper with synthetic overlays Endofit internal sleeve hugs the foot in the right places to improve feedback and provide support Quicklace quick-pull lacing system with friction-resistant eyelets and lace pocket Moisture-wicking, breathable mesh lining Removable, OrthoLite cushioned insole LT Muscle midsole is a mixture of two different EVA composites in the midsole for responsive cushioning and support OS Tendon semi-rigid TPU bars through the sole promote spring-like transition from heel-strike to toe-off Contagrip LT lightweight forefoot rubber with flex grooves and self-cleaning, multidirectional lugs Contagrip HA abrasion-resistant rubber heel for increased support and durability on rough surfaces Low 6mm heel-to-toe drop promotes a more natural running motion