Supportive: cushioning elastic polyurethane sole. Higher: 2 inch bottom. Lightweight: less than 1.7 pound each pairs. Ventilate: stretchy mesh upper. Size reference = foot length: size 5（8.7 inch）. size 6（9 inch）. size 6.5（9.3 inch）. size 7（9.5 inch）. size 8（9.8 inch）. size 9（10 inch）. size 9.5（10.3 inch）. size 10（10.6 inch）. OUDE slip on sneakers women black designed for someone who needs a comfortable and minimalist shoes,The breathable and soft upper made by knit with fashion stripes,the supportive sole made by elastic polyurethane materials.