Take to the road in the cool running Torin 3 running shoe. Predecessor: Torin 2.5. Support Type: Neutral to underpronation. Cushioning: Maximum cushioning. Surface: Road. Differential: 0 mm. Altra Zero Drop recommends that those new to natural running and zero-drop footwear transition slowly by wearing these on shorter runs and gradually building up to regular mileage. Ideal for road running cross training walking and other fitness activities. Designed to help improve running form toe splay and natural stability. Quick-drying air mesh upper with lightweight synthetic overlays. FootShape toe box allows toes to splay naturally. Lace-up closure. Lightly padded tongue and collar. Breathable fabric lining. Removable 6 mm Contour Footbed. Natural Ride system (NRS) utilizes a combination of outsole and midsole componentry to promote a more natural stride. Dual-layer EVA midsole with highly-responsive A-Bound top layer returns energy with each stride. Fully-cushioned Zero Drop platform helps to align the body promoting a natural low-impact landing. Innerflex midsole delivers heightened flexibility. FootPod midsole and outsole pattern maps the foot' s bones and tendons boosting pliability. Total Stack Height (total thickness of midsole and outsole underfoot): 28 mm. Last: PFS2-M Imported. Measurements: Weight: 10 oz Product measurements were taken using size 12 width D - Medium.Weight of footwear is based on a single item not a pair. Proposition 65 WARNING: This product contains chemicals known to the State of California to cause cancer and birth defects or other reproductive harm.