Adams Trail-A-Bike, £134.99,

Even if your child can cycle their own bike they may not have the distance in their legs for a longer family ride. The Trail-a-Bike is suitable for children from 4-6 (up to 38.5kg) and with its singlespeed freewheel it gives them the option to do as little or as much pedalling as they want. Provided there is enough clearance, it connects to the seatpost of your bike and follows behind like a trailer, so there’s no danger of it going off on its own. A really handy feature is that the unit folds in half for either storage at home or transporting in a car. Also comes in geared versions for older children and a tandem for two children.

PROS: folds for storage
CONS: no lower chainguard — needs care on clean floors!