Altra Superior 5 Men's Mineral Blue Fast, light and durable, the Altra Superior blazes the beaten path! This trail running shoe uses a MaxTrac™ outsole and multi-directional lug pattern for reliable traction. The updated removable StoneGuard™ uses less material to unleash your speed, while a wrap-around tongue provides a locked-in fit. When you feel like flying through the forest, take off in the Altra Superior 5! What's New? Updated StoneGuard™ uses less material for a lighter ride. Who's it for? Adventurous trail runners seeking a fast and nimble shoe to blaze their own path. Shoe Technology Upper: Sandwich mesh vamp with a quarter panel overlay for durability. GaiterTrap™ hook-and-loop tab allows gaiters to easily attach while protecting against rocks and debris. FootShape™ comfort gives your feet more space to sit naturally. Midsole: Quantic™ foam offers a luxurious and lightweight ride for many miles. Balanced Cushioning™ platform positions your heel and forefoot at an equal distance from the ground, encouraging better form and low impact landings. Outsole: MaxTrac™ outsole provides the perfect combination of grip, traction and durability on different terrain. Trailclaw™ canted lugs strategically placed beneath the metatarsals to provide underfoot traction.