Size Guide: Please measure your waist; Please use our Size Chart located in left images. Small (US SIZE 0-2)-Fit Waist 20-22inch; Medium (US SIZE 2-4)-Fit Waist 22-24inch; Large (US SIZE 4-6)-Fit Waist 24-26inch; X-Large (US SIZE 6-8)-Fit Waist 26-28inch; XX-Large (US SIZE 8-10)-Fit Waist 28-30inch; XXX-Large (US SIZE 10-12)-Fit Waist 30-32inch; Color Black/Beige(popular color,match all type of clothes) Material: 85% Nylon, 15% Spandex High quality fabrics are very smooth and elastic,flexible and breathable,silky to touch,comfortable to wear,suitable for all season,especially summer. Easy way to wear it everyday for dating, social outgoing, dancing, etc.. Once put on, it instantly makes your butts look bigger and more beautiful. Sexy, comfortable and invisible, perfect for jeans, shorts, a tight dress or simply give your butt a boost while working out. Look natural, This butt lifter simply makes everything you own, "pop". Enjoy your beautiful curve at anytime.