Brooks Levitate 4 Men's Running Shoe - Color: Red/White - Size: 11.5 Medium(D) Now 20% lighter, the DNA AMP midosle technology let's your foot spring off the ground with each step for speedy, efficient energy return. An updated arrow-point pattern on the outsole lets your foot move from heel to toe quickly, enhancing the shoe's springy feel. They updated the Fit Knit upper to provide a close-to-foot fit that's lighter, softer, and more breathable than before. MIDSOLE: DNA AMP cushioning system provides Brooks' highest amount of energy return, using a polyurethane midsole encased in a TPU skin that resists the expansion of the foam outwards, allowing the energy to be directed back upwards for an extremely energized. OUTSOLE: Midfoot Transition Zone uses an arrow-point rubber outsole design to help direct pressure towards the forefoot, providing flexibility while encouraging quick transitions from heel to toe. HPR Plus is a high abrasion-resistant rubber located in the heel for durable traction. Green Rubber in the forefoot to create a springy feel while still delivering traction and durability. UPPER: FitKnit upper uses 3D circular knit to provide a plush fit designed to flex and hold the foot strategically as it moves. Wrap around, integrated collar provides a sock like fit. New, with box 2771