Ideal for families with 2 children or parents wanting one chair that covers the full infant-to-preschool transition, this 16-in-1 baby high chair combines 16 configuration modes with a 360 degree activity center, a detachable double-sided tabletop, and ASTM plus CPSIA certifications. 16 different configurations include full-size feeding high chair, infant booster seat, small dining chair, toddler chair, small stool, activity center, study table-and-chair, building block table, and storage table, covering more use modes than competitors. The activity center mode features a 360 degree rotating seat that lets babies stay engaged during active play, and a bundled basket holds toys within reach during extended use. ASTM and CPSIA compliance verifies safety standards, and a 5-point safety harness plus anti-falling baffle secure the baby across different modes, with BPA-free PP tray material for verified meal safety. A removable tray offers 3 adjustable positions, and legs offer 3-level adjustable height for accommodating various table heights across growing kid needs from 6 months to preschool. A detachable tabletop has a smooth side for studying, painting, or crafts, and a grooved side for building blocks. A waterproof seat cushion wipes down easily and detaches for cleaning, and 2 adjustable straps enable booster seat setup for dining chair attachment. Tool-free installation keeps setup simple.