Note: Waist is measured from the narrowest part of the torso of the navel (Belly Button) Elastic belt outside detachable Hourglass Slim Shape （Can wear under your cloth ） Ultra soft and thin, suitable for workout and daily wear, enjoy the sweat and support. Inner: Silver coating in silver color Middle: Neoprene foam Outer: Nylon fabric in black color Extra Small-Fits 22 to 23 Belly Button Small - Fits 24 to 25 Belly Button Medium - Fits 26 to 28 Belly Button Large - Fits 29 to 31 Belly Button