Use with Group 2 car seats to keep children upright & supported. For safety, comfort & peace of mind. Once a child is in a high-back booster, the additional comfort & safety of a 5 point harness is no longer available. Belt Upp is an easy to use belt & buckle that offers these benefits by keeping even a sleeping child upright, comfortable & safe. Seat belt & buckle set designed to stop children falling forward when asleep in a car For use with a Group 2-3 car-seat (also known as a "high-back booster") Suitable for children weighing 15kg or more, Approx. 4 years old Fully tested to ECE R44/04 & TRL car-seat regulations Easy fitting in under a minute. No tools needed