Material:100% Cotton;Soft and comfortable There are three layers of fold on the back These bloomers are super cute and your daughter gets compliments on them wherever she go Bloomer Size chart as follows Size: S-(6M); Waist unstretched :16cm/ 6.3"; Age:0-6month; Size: M-(12M); Waist unstretched :17cm/ 6.6"; Age: 6-12month; Size: L-(18M); Waist unstretched :18cm/ 7.1"; Age: 12-18month;