From ASICS, the Women's GT-1000 15 Running Shoes feature: Engineered mesh upper Lace up closure FF BLAST™ MAX cushioning helps provide a lightweight and energetic ride OrthoLite™ sockliner provides soft step-in comfort Rearfoot PureGEL™ technology helps provide lightweight cushioning and softer landings AHARPLUS™ heel plug rubber helps improve durability AHAR™ LO rubber outsole helps create better traction, improved softness, and advanced durability Approx. 8mm drop Approx. 33.5mm-25.5mm stack Approx. 242g/8.5 oz. weight (based on women's US size 8) Imported.