Enjoy supreme softness and ultimate comfort from your first step. The neutral Brooks Sports® Women's Glycerin 21 Running Shoe provides a plush ride thanks to more DNA LOFT v3 cushioning than before plus a new, more streamlined upper that delivers structure and breathability. Engineered Warp Knit upper provides comfort and breathability and allows for flexible, accomodating fit while staying soft against foot Super-soft, nitrogen-infused DNA LOFT v3 cushioned midsole (2mm more than DNA LOFT v2) Smooth, stable transitions from broad platform Durable Rubber traction outsole Sustainability: 59.7% Recycled materials in the upper; 4.1 Plastic bottles diverted from landfills Product Features: Weight:8.8 oz.(249.5 g) Upper:Engineered Recycled Warp Knit Midsole:DNA LOFT v3 Cushioning Outsole:Non-slip, non-marking Rubber traction Support (shank):Stability Lining:Breathable Mesh Height:10mm drop Brooks Sports Women's Glycerin 21 Road Running Shoe