1Shoulder pad is made of EVA foam fabric, lightweight, breathable and hygienic, comfortable to wear. 2It can be worn under the clothes and attached to the skin. Abdomen area is fixed by thin double elastic band, which will not curb the skin or become stuffy. 3The back is directly made of PE material, the foam strip close to the back is skinfriendly. 4Hook&loop design, good stickiness, tightness of belt is adjustable. Elastic fabric, closefitting design. 5Help to correct sitting posture, straighten your back and waist, prevent myopia. You can work while correcting your posture.