Still in package, brand new never been used!! Dimensions: 15.7 x 17.25 x 14.3 in, and folds down to 15 x 17.25 x 4 in. Silicone Tray is 15 x 13.25 x 1.5 in. The Hook-On Chair can be adjusted to fit tables 0.8” to 2.95” thick (20-75 mm). Weight: 5.5 lbs Materials: Made with 100% polyester, machine washable fabric and fill, with an aluminum frame and nylon straps. The tray is made from non-toxic, BPA & PFAS-free, FDA-grade silicone. Age: For use when the child can sit up unaided (approximately 4-6mo.+) and supports up to 37 lb.