XP Sensor Grip soleBUILT FOR SPEED: this race oriented shoe is light, grippy, low to the ground and protective with a snug fit.UPPER: breathable mesh upper offers cooling. Strategic welded overlays and a reinforced toe cap protect from trail abrasion The RL XP Lace System is a totally interwoven lacing support structure to wrap your foot securely without sacrificing breathability or constricting your foot.SOLE: Dynamic Sensor Sole outsole rubber with 4mm tread gives high levels of grip and durability on all surfaces. Dual Density Sensor3 thermoformed EVA midsole & footbed for increased comfort, power, and control. The forefoot Rock Plate protects your forefoot from sharp trail hazards.FEATURES: Gaiter attachment point at front, 19mm heel stack height, 4mm Heel to Toe drop.FIT: Overall Fit: True to Size. Heel: Narrow. Midfoot: Narrow. Toebox: Narrow. 270 g / 9.5 oz per shoe.