Kids chair SIHOO K32 Light BlueErgonomic Kid chair 1) Polyester fabric, non-toxic, non-damaging to the skin, waterproof/dust/fouling2) High density new foam with plywood inside3) Q235 steel back support4) Multi-function mechanism with up & down, sliding seating fucntion5) Children's special used gaslift only up and down, passed BIFMA test6) Gravity brake PU castorsDimmentions: 46*53-62*89.5-107.5 cmHeight adjustable 89.5-107.5 cm