Experience comfort and style with Altra women's superior 4 trail running shoes. Featuring a sleek raspberry and gray design, these shoes are perfect for your outdoor adventures. If you already loved the Superior, you are in for a treat. The Superior 4 is even lighter, grippier and sleeker. It features a knit, wrap-around style upper to more security, plush yet resilient Altra Quantic midsole and sticky MaxTrac rubber outsole. The rounded heel style and updated lug pattern tops off this light weight trail crusher. -Made with fabric and imported with a rubber sole -Ideal for trail running and trail racing -Features low cushioning with a stack height of 21mm -Weighs 6.6 oz / 187 g for a lightweight design -Designed to enhance natural foot positioning, toe splay, comfort, and stability FOOT SHAPE Allows your toes to relax and spread out naturally for more comfort and stability in uphill climbs and downhill descents. ZERO Z DROP Places your heel and forefoot the same distance from the ground to encourage proper, low-impact form throughout your trail run. GAITOR TRAP Hook-and-loop tab allows strapless gaiter attachment that prevents debris from building up beneath the shoe. TRAIL CLAW Canted lugs positioned strategically beneath the metatarsals to provide traction at toe off. QUANTIC Quantic FIT3HER The Fit4Her technology means we customize every women's shoe to the unique anatomy of the female foot.