This DinerPal High Chair designed for every stage, from a baby set to a toddler seat, a learning tower, and, when needed, an extra adult chair that supports up to 308 lbs. Chair modes (baby, toddler, and adult) require no tools for adjustment, making it easy to adapt to your family s needs.Press and slide to adjust the seat and footrest, each offering 7 height positions to ensure optimal support. The 16-inch wide seat with 2 depth positions provides lasting comfort, even for bigger kids.Slightly curved back supports healthy upright posture, while the adjustable seat and footrest provide sturdy support for your baby's comfort and stability.Five-point harness keeps baby securely in place. The stable triangular frame and non-slip silicone feet prevent tipping or sliding. Made of Fsc-certified beechwood and Food-Grade plastic, meeting Astm and En safety standards.