Material: 100% cotton. This material is very soft, people with sensitive skin can also wear it.SIZE: M-L. We measured the size in cm, please check your size clearly before ordering. Size M: coat length 71cm, shoulder 44cm, bust 102cm, sleeve 18/54cm, hips 100cm, pants length 96cm; L: coat length 72cm, shoulder 45cnm, bust 106cm, sleeve 19/56cm,hips 102cm, pants length 98cm;we measured the size by hand, maybe about 1-3cm difference, hope you can understand.WEIGHT: 0.4kg for short sleeves, 0.6kg for long sleeves.This Pajama is a suit: coat and trousers. We have made two styles of clothes: you can choose short sleeves or long sleeves.The size of the pants is actually adjustable. The waist is elastic