This product is now discontinued by Britax and no longer available. Britax Discovery High Back Booster from 15kg to 36kg. The Discovery is one of the slimmest HBB so it is a great option for 3 across. Side impact protection Isofix soft-latch or seat belt installation ADAC Score: 2.1 (Good) Seat belt guide correctly positions the 3-point seat belt over the child's shoulder and pelvis Backrest adjusts to allow installation in a wide range of cars Easily accessible seat belt path Easy to transfer between cars Removable cover: softly padded and washable cover Dimensions (H x W x D): 67 – 85 x 44 x 45cm Weight: 4.3kg Instruction Manual: for installation and Britax Discovery car seat information Vehicle List: for checking fitting compatibility with your vehicle.