Altra Superior 4.0
The new Altra Superior 4 takes an already lightweight, fast trail shoe and makes it even lighter. Featuring Altra’s Quantic midsole foam and MaxTrac rubber, the Superior sheds some weight and adds some grip. The upper has been completely redesigned in a wrap-around style for added security and support. It’s seamless, stretchy in the toe box, and supportive in the midfoot and rounded heel. The improved lug pattern is made to fly down the trail with ease and speed. Like the rest of Altra's trails shoes, the Superior 4.0 is equipped with the velcro gaiter attachment and includes a removable stone guard to protect your feet from rocky trails.
Weight: 7.9 oz (Men's) | 6.9 oz (Women's)
Stack Height: 21mm
Altra Quantic midsole balances cushioning and responsiveness while remaining lightweight.
Inner Flex flex grooves system provides additional flexibility and cuts weight for increased performance.
Natural Ride System (NRS) design includes a more natural, foot-shaped last, zero millimeter heel to toe drop, and metatarsal-specific shapes in the outsole to assist in proper foot mechanics and allow for more natural foot movement.
Natural Foot Design follows the natural shape of the foot for ultimate comfort.
Removable StoneGuard Rock Protection slips underneath the sockliner to disperse shock and protect the feet from rock-bruising. StoneGuard weighs 1.0 oz and is 1 mm thick (Men's size 9).
Trail Claw outsole design uses a sticky rubber multi-directional pattern, combined with updated lugs under the forefoot and claws under the toes to provide improved grip and stability on trails.
FootPod outsole design follows the natural construction of the human foot for maximum flexibility and a responsive ride.
MaxTrac Outsole uses anatomically-shaped sticky rubber that prioritizes grip and durability on uneven terrain.
Quick Dry Air Mesh is updated for durability, wicking water away from your foot while remaining light and breathable.
Seamless Upper reduces irritation and provides next-to-foot comfort.
Gaiter Trap is a velcro strap that secures trail running gaiters to the shoe, preventing debris from building up beneath the shoe (matching gaiter sold separately).
Synthetic Overlays provide long-lasting support.
Women's Shoe Features: FIT4HER™
The Fit4Her technology means we customize every women's shoe to the unique anatomy of the female foot.