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.
Insole: 5 mm Contour Footbed
FootShape™ Toe Box with Fully Cushioned Zero Drop Platform™
Stack Height: 21 mm
Midsole: Altra Quantic™
Outsole: MaxTrac™ Rubber with TrailClaw™
Upper: Seamless wrap-around engineered knit
Insole: 6 mm Contour Footbed with removable StoneGuard™
FootShape™ Toe Box with Fully Cushioned Zero Drop™ Platform
Stack Height 21mm
Midsole: Quantic ™ with InnerFlex™
Outsole: MaxTrac™ with TrailClaw™
Upper: Wrap-Around Knit
Weight: 7.9 oz. / 224 g
FOOTSHAPE™ TOE BOX
Allows your toes to relax and spread out naturally for more comfort and stability in uphill climbs and downhill descents.
Our Balanced Cushioning™ platform positions your heel and forefoot at an equal distance from the ground, encouraging better alignment, better form, and a low impact landing.
Hook-and-loop tab allows strapless gaiter attachment that prevents debris from building up beneath the shoe.
Canted lugs positioned strategically beneath the metatarsals to provide traction at toe off.
New midsole cushioning with a perfect blend of plush, responsive cushion and a lightweight ride.