100% Synthetic Imported Rubber sole These shoes have a performance fit. We recommend ordering a 1/2 size bigger than your typical NB size. Midsole Cushioning: These New Balance sneakers feature a REVlite midsole that delivers incredibly lightweight cushioning and provides a responsive ride for comfortable all-day wear Underfoot Comfort: With an NB Memory Sole Comfort Insert that offers a plush feel with every step, this everyday shoe for women was made for wearing anywhere and everywhere Sleek Design and Supportive Fit: Stay comfortable and stylish as you go about your day with the contemporary bootie design. The bootie upper construction hugs your foot for a snug, supportive fit Lightweight Feel: The modern, eye-catching upper on these cross-trainers uses mesh and synthetic materials for a super lightweight feel that helps keep you light on your feet