The light and thin fabric is smooth, warm and close to the skin. It can be worn freely in daily or sleep without squeezing the chest, just as it is not worn. The slender beautiful back shoulder strap is comfortable, adjustable and non detachable. The back is simple, with multiple rows of three buttons, which can freely adjust the appropriate lower circumference. The elastic waist is snug and breathable, and the lace lotus leaf edge is dotted with playful and lovely.