At around six months, your baby's back and spine are developed enough for them to hold their head up independently and begin sitting on their own. This is the right time to swap the Tripp Trapp Newborn Set for the Tripp Trapp Baby Set. It has been specifically designed for babies and toddlers, allowing them to sit safely and comfortably at the table and learn social, language, and fine motor skills from others. The Baby Set consists of a backrest and a safety rail. Children can use the Tripp Trapp with the Baby Set as soon as they can sit upright without assistance, typically around 6-9 months. It can be used until the child is about 3 years old; during this time, the child sits securely and is protected from slipping through. The Baby Set is available in the same colors as the Tripp Trapp chair. The Baby Set is dishwasher safe. The Tripp Trapp Baby Set can be used with all Tripp Trapp chairs manufactured after 05/2003 that have a serial number starting with 3, 4, or 5. The Baby Set can also be used with the Tripp Trapp Exclusive range. Package includes: Stokke Baby Set including Extended Glider.