The chelsea fc rway sp luxe is a stylish and comfortable group 2 3 high back booster without harness and is suitable for children between 15kg4733lbs 36kg4779lbs 40approx 4 years to 11 years41 it has a height adjustable head support with side impact protection swivel armrests for ease of accedss 40particularly useful in smaller cars41 and a simple recline mechanism to help stop sleeping children from falling forwards the seat cover has extra padding and there is an extra