Size: 18.9 - 20.5 inches (48 - 52 cm); Weight: 8.8 oz (250 g); Passes the SG/Product Safety Standards; For 1 year old to kindergarten; Comes with a dial-type buckle that can be adjusted to fit the growth of growth; Lightweight model that is easy for children to use for: bicycle kick skater, roller skateboard, inline skate, unicycle, etc.