Size: Free size (3-15 kg baby is suitable). There are 3x3 rows of buttons on the diaper to adjust the size required for your baby (S, M, L) Diaper cover needs to be used with urine pad Outer layer: polyester, TPU waterproof breathable membrane Features 1. Good quality with beautiful & bright colours; 2. Soft, washable and breathable; 3. Comfortable elastic around the leg area to prevent leaking. 4. Suitable for babies and toddlers between 3kg-15kg (a rough guide for reference only); 5. One size fits all – you can adjust it to your desired size (S, M or L) by snapping onto different rows of buttons on the nappy. 6. Length of Diaper: 39cm in length X 35cm in width of buttons on the nappy. Materials Outer layer: Waterproof PUL material Inner layer: absorbent polyester that does not hold moisture itself. The moisture get drawn away to the insert to keep your baby dry; Insert dimension: approx. 35cm x 14cm