Features： 1、Made of highly breathable fabric, it is very light, soft and comfortable to wear. 2、Protect the spine without straining, so that the body can enjoy a more comfortable posture correction process every day. 3、Cooperate with unique one?piece forming process to increase breathability of back, waist and shoulders. 4、As your posture improves and your back muscles will become much stronger. 5、Integrated structure, increase the force on the body, so that the body can feel the balance, stability and comfort of posture correction. Specification： Condition: Item Type: Posture Corrector Color: Skin Color Optional Size: S, M, L, XL, XXL Product Function: Shaping, Gathering Fabric Composition: Nylon, Spandex SizeSuitable Waist CircumferenceUnder BustWeightNormal Underwear Size S60-74cm/23.62-29.13in60-73cm/23.62-28.74in35-45kg/77.16-99.20lb32A/B/C.34A M75-80cm/29.52-31.49in73-80cm/28.74-31.49in45-52.5kg/99.20-115.74lb32D.34B/C/D.36A L80-85cm/31.49-33.46in80-86cm/31.49-33.85in52.5-60kg/115.74-132.27lb36/C/D.38A/B XL85-93cm/33.46-36.61in86-93cm/33.85-36.61in60-67.5kg/132.27-148.81lb38C/D.40A/B XXL93-101cm/36.61-39.76in93-100cm/36.61-39.37in67.5-82.5kg/148.81-181.88lb42C/D.42A/B Package List： 1 x Posture Correction Belt 1 x Extension Band