Ultra Sensor Grip soleLONG DISTANCE SHOE: the perfect combination of comfort, weight, and security for high mileage.UPPER: highly breathable mesh upper offers optimal cooling. Select welded overlays protect from debris. M-Lock Band – Metatarsal Lock Band & Lace System hug your midfoot without causing foot constriction. External stability heel cradle to support heel movement.SOLE: Ultra Sensor Sole with 4mm Tread gives confident grip and durability on all surfaces. Low density EVA midsole provides optimal cushioning & comfort. Dual Density Sensor3 thermoformed footbed for increased comfort, power, and control.FEATURES: Traditional lacing system. Reinforced Toe Cap. Gaiter Attachment Point. 25mm heel stack height, 6mm Heel to Toe drop.FIT: Overall Fit: True to Size. Heel: Medium to Wide with a Narrower Ankle. Midfoot: Medium to Wide. Toebox: Wide. 270 g / 9.5 oz per shoe.