Product Details     Support Type Heel-to-Toe Drop (mm) Cushioning Style: 110419 The Brooks Glycerin 21 Running Shoe is made for comfort. The super soft, nitrogen-infused, DNA LOFT v3 cushioning is made to be lightweight and responsive while feeling plush. And this new and improved model has an extra 2mm of it. They also use a warp knit upper that allows you to achieve a snug fit without compromising the comfortable feeling. A broad platform provides a stable and confidence-inspiring transition, while the RoadTack rubber sole does the same for traction. With the Glycerin 21, you can focus on your run because there’s no way your shoes are going to distract you with discomfort. The American Podiatric Medical Association (APMA) Seal of Acceptance recognizes products that have been found beneficial to foot health. To earn the Seal, each product is reviewed by a group of APMA podiatrists to ensure it promotes foot health. KEY FEATURES Nitrogen-infused DNA LOFT v3 cushioning for a super soft ride with a responsive feel Warp knit upper provides a snug fit that remains breathable New RoadTack rubber includes recycled silica and is lightweight and durable SPECSSupport Type: NeutralHeel-to-Toe Drop (mm): 10Cushioning: MaximalFEATURESOrthopedic Brooks Glycerin 21 Running Shoe (Men's)