Comfortable baby pants made with UNIQLO's AIRism material, size S/M (80-100), with a breathable design. - Brand: UNIQLO - Model Name: AIRism - Size: S/M (80-100) Thank you for viewing. This is a set of 4! The size can be used for babies around 80-100cm, and the waist is adjustable. Perfect for daycare wear. My two children have worn these, so please understand. There are no noticeable stains, but there is some wear and tear.