The Brooks Glycerin 20 is a neutral all-round running shoe. The Glycerin 20 offers you ultimate running comfort and super soft cushioning. The new, soft and breathable Air-Mesh upper guarantees a comfortable fit that keeps your foot securely in place. The upper is reinforced in strategic areas for added structure and targeted support. Elsewhere, the upper is designed to be more flexible to give you more freedom of movement. The midsole has been slightly redesigned and improved. DNA LOFT v3 cushioning material with nitrogen provides soft, lightweight cushioning. Despite the soft damping, you still benefit from good energy return. Other plus points: The material is extremely durable. The redesigned midsole and outsole ensure a wider base for smooth heel-to-toe transitions. The Glycerin 20 is a perfect partner for walking units to endurance running.