The Air Ride can fit your 3-year old perfectly all the way up til his or her 11th birthday! Your little one may not be so little anymore, but your child deserves all the comfort and security that you can give him--the Aprica Air Ride will be able to give all that and more. • Protecting your child's head, shoulders and waist is the utmost importance, that's what the Air Ride has a full body 3D support • The large and deep Head Support keeps the neck and head in place, even while they’re asleep • The seat is made out of a mesh sheet and has a backrest that contains air holes, allowing air to circulate, keeping your baby cool and comfortable while seated • Use the seat with the backrest when your child is 3 years old, and as a booster seat all the way up til he or she turns 11 • Lightweight and compact, it's around 5kg, so it’s easier to install and carry compared to other car seats • Comes with 1 cupholder Usage period: 15kg to 36kg Weight: 4.5kg High back with seat belt (15kg-25kg) Booster with seat belt (22kg-36kg) Side impact protection 5 headrest height positions 3D air permeable mesh material Cup holder ECE R44/04, and Taiwan CNS Safety standards