With BoostApak, you'll always have a car booster seat with you. BoostApak is a spacious hand luggage-approved rucksack that doubles as a booster seat, making it ideal for car-pooling, taxis and holidaying abroad. It's hand luggage approved with a spacious 8-litre capacity, which means children can take their favourite toys with them, and the hard plastic shell protects contents from getting squashed when in use. BoostApak is an ECE44.04-approved car seat for groups 2 and 3, suitable for children under 135 cm in height or between 15 and 36 kg in weight (aged approximately 4 to 12 years old).