"The Upseat Baby Chair & Booster Seat is a 3-in-1 ergonomic baby seat was developed with the guidance of leading physical therapists to encourage proper upright posture, to be safe for developing hips, and to promote functional arm movement. This infant booster seat with tray is suitable for ages 4 months to 2 years old (30 lbs). The Upseat Baby Seat comes with a tray for playtime and snack time and is great to use on the floor or attached to a dining room chair for meals."