The Superior 4 takes an already lightweight, fast trail shoe and makes it even lighter. The upper has been completely redesigned in a wrap-around style for added security and support; the midsole features Altra’s proprietary Quantic™ foam, while the outsole is now made of our sticky MaxTrac™ rubber. To top it off, the rounded heel and improved lug pattern is made to fly down the trail with ease and speed.
If you enjoy a low cushioned trail shoe with a soft responsive midsole, with flexibility in the forefoot area, you're gonna love bouncing around like a wild mountain goat in the Superior 4.
THE NITTY GRITTY
Ideal Uses: Trail Running, Ultrarunning, Trail Racing, Fast Packing
Stack Height: 21mm
Weight: 248 g
Designed to Improve: Natural Foot Positioning, Toe Splay, Comfort
Platform: Fully Cushioned Zero Drop™ platform and FootShape™ toe box
Midsole: Quantic ™ with InnerFlex™
Outsole: MaxTrac™ with TrailClaw™
Insole: 5 mm Contour Footbed, Removable StoneGuard
Upper: Wrap-Around Knit
Other Features: 2-point GaiterTrapTM