Lover-Beauty Women's Workout Waist Trainer Tummy Girdle Control Corset Belly Hook and Eye closure Material:67% Polyester, 33% Rubber Fibre The pierced material is breathable so wearing this waist cincher is comfortable. Hand wash and line dry.For colors Black and Beige:it is with neither steel bone nor plastic bone;For colors Atrous and Nankin:it is with 4 plastic boned design;For colors Atramentous and Flesh-Colored:it is with 9 steel boned design. Plastic Bones Eyelet Corset for Waist Training which can ensure that your waist can be shaped well,3 rows of hook eyes closures allow you to size the garment down with you Shaper girdle, Soft and breathabl material, 360 degree firm control on tummy and waist, Seamless, Front multiple hook and eye closure, Waist cincher,This style eliminates back bulge, improves posture and shapes the waist to enhance ones appearance under clothes PLS NOTE:We updated size On June 23,2016. For best results measure your waistline above your belly button and choose your size by using the size chart,but do not use the default Amazon Size Chart