Mediposture Child Booster Seat & Kiddie Headrest, Gray, Two Piece Combo. Designed to offer support to the patient's neck, but features a slope-shape that gently "tilts" the head backward. Dental Chair Booster Seat: Measures: 26"L x 15"W x 7"H (Reclined), Kiddie Headrest Measures: 8"L x 6.25"W x 2.75"H. Fabric contains no latex or phthalates. Features anti-microbial cover for direct use with infection-control solutions commonly found in the dental operatory.