Design: Sleek and durable mesh D-ring for gaiter compatibility In-Shoe Comfort: PWRRUN+ sockliner provides amazing step-in-comfort PWRRUN foam midsole is lightweight and cushioned for a comfortable feel Durability & Traction: Lightweight protective film for added protection in the high abrasion areas Rock guard provides added protection on uneven surfaces PWRTRAC lug system offers precision grip to dig in with confidence Additional Details: Weight: 8.1 oz / 230g Heel-to-toe offset: 4mm (28mm heel / 24mm forefoot)