At 480g this is the light end of the car booster market, and that is the whole argument for it. A booster that folds down and weighs less than a bag of sugar is one that actually comes out of the boot, moves between two cars, and comes into the house at the other end rather than living permanently strapped to a back seat you occasionally need for passengers.

It works the same way the heavier ones do. The base straps to the vehicle seat, a padded cushion lifts a small dog high enough to see out of the window, and a short safety tether clips to a harness so they cannot make the jump into the front. Carry handles are the addition worth having, because they turn the same thing into a way of carrying a small dog from car to vet door without setting them down in a car park.

• Padded booster cushion that straps to the car seat
• Carry handles for lifting the whole thing out
• Safety tether to clip to a collar or harness
• Two colours, grey and black
• Product weight 480g
• Package size 43 x 23 x 12.5cm

Two things worth knowing. Second, a tether holds a dog in place through ordinary driving; it is not a crash-tested restraint, and nothing at this price is.

Who it's for: Owners of one small dog who move between cars or make short frequent trips, and want something light enough to carry in and out each time.