Noise-free wheels are what make this walker tolerable in an apartment: they roll without the clatter a hard plastic caster makes on tile, and non-slip treads keep the frame from sliding. A grip handle lets an adult steer from behind or a toddler push from the front. The music box adds sound and lights, and a steering wheel with a shifter sits on the tray. Three heights cover 6 to 18 Months, the seat cushion detaches for washing, and the 9-lb frame folds to 12 in. Six non-slip pads back the ASTM and CPSIA rating to 26.5 lb.