This on the go; booster seat is practical, safe and fun; it raises baby up to 10cm and can be attached to any type of chair. Thanks to its harness your baby is safe and can also easily carry their little seat as it transforms into a backpack. Scalable : turns into a backpack. Suitable for children from birth to 13kg. Suitable for children aged approximately 9 months to 4 years. For use with 3 point seat belts. Padded seat. Size H31, W14, D29cm. Removable washable cover. Manufacturers lifetime guarantee.