EUC Physiclo Pro Resistance Capris. These are basically activewear and mesh leggings with built-in resistance bands (later pictures show what they look like inside out). Size: Women's Small Color: Black on black No obvious flaws, just a little too small. Probably worn twice. Bundle and save and all that good stuff; a lot more activewear in my closet! "These one-of-a-kind compression capris feature built-in resistance technology to make your workouts more productive than ever. The inner elastic layers act like resistance bands around your legs, helping you get stronger, fitter, faster. Whether you're running, cycling, or squatting, amplify your normal routine with a pair of Physiclo resistance capris and prepare to feel the burn. These functional workout capris are sleek, breathable, and designed to make you work harder with every step. Patent-pending resistance system challenges your body and enhances your workouts Training in Physiclo increases muscle activation by 23% and calorie burn by 14% Target muscle groups: quadriceps, hamstrings, abductors, and glutes Moisture-wicking, breathable and machine washable 3'' x 4'' zippered back pocket for keys or cards."