These Superfeet Premium Black insoles keep their shape and deliver reliable support and comfort. Superfeet Shape is low-profile and provides added stability and support to help reduce foot fatigue. Heel cup that is designed to keep you on your feet all day. High-Density foam features a closed-cell construction that provides added durability. Designed to eliminate odor-causing bacteria to keep your feet feeling fresh. Heel stabilizer helps reduce shifting and movement in the footwear 100 percent man-made materials. Measurements: Weight: 1 oz Product measurements were taken using size E (Mens 9.5-11, Womens 10.5-12). Please note that measurements may vary by size.