1. Upgraded Child SeatThe upgraded version of the children's desk chair adopts a double back support and flip armrest design. The backrest and armrests can well support the child's back, waist and arms. At the same time, the seat fits the child's body curve and helps the child develop good sitting habits. 2. MultiSize AdjustmentOur children's computer chair can be adjusted in height or depth from top to bottom. For example, the foot pads can be adjusted up and down 3.93 inches, the seat cushion height can be adjusted up and down 4.72 inches, the backrest can be adjusted front and back 1.57 inches, and the backrest can be adjusted up and down 1.18 inches. Multiangle adjustment helps children form the most scientific sitting posture. 3. HighQuality MaterialsThe main structure of children's writing chairs is made of highquality metal materials with excellent workmanship. More importantly, the backrest and seat cushion are filled with highly elastic thick sponge, which has good rebound effect and can bear a maximum weight of 150lbs. 4. Gravity SelfLocking WheelsThis children's study chair uses gravity selflocking wheels. The wheels will automatically lock when the weight is greater than 20KG. They will automatically unlock and move when you stand up. The starless base supports stable and does not shake, which can improve your child's concentration on learning.