The Glycerin GTS 20 features our guiderails® support technology that keeps excess movement in check, so you stay in your ideal stride. Plus, supremely soft DNA loft v3 ensures these super-cushioned running shoes deliver total comfort. Sustainability - 32.4% Recycled materials in the upper. 4.66% Plastic bottles diverted from landfills. Upper Technology - Engineered Air Mesh, 3D Fit Print. Color: blue