The lightweight Junior Maxi™ i-Size R129 high-back booster seat allows your "big child" to travel safely from 100-150 cm (approximately 3.5 to 12 years). The Junior Maxi™ i-Size R129 features a headrest that can be adjusted with one hand into 10 positions, enabling parents to quickly and easily adapt the height of the headrest to the child's growth. The two hidden cup holders provide space for drinks, and the cover is machine washable. The Junior Maxi™ i-Size R129 has undergone rigorous testing to meet or exceed all applicable R129/i-Size regulations.