The primary materials that compose this product contain a minimum of 20 percent recycled content.Train yourself stronger for enhanced endurance wearing the ASICS® Women's GEL-Kayano 31 Road Running Shoes. The upper features partially recycled composition with engineered mesh construction that improves breathability. The footwear also has external back heel counter that helps keep the foot stable and provide a more comfortable stride.Textile lining and OrthoLite™ X-55 insole provide enhanced comfort. 4D GUIDANCE SYSTEM™ helps create adaptive stability for a more balanced stride.FF BLAST™ PLUS ECO cushioning helps provide cloud-like comfort.Rearfoot PureGEL™ technology helps provide lightweight cushioning and softer landings.Lace-up closure.Heel pull tabs for easy wear.Round toe silhouette.Hybrid ASICSGRIP™ outsole provides better grip and more softness underfoot.Imported.View Zappos.com Glossary of TermsFind something wrong in this description? Help us fix it! Report An Error