It was £12 then £5 & as part of their Spring deals they have 20% off bike acessories at checkout making it just £4
The Double bubble exhaust sits just above the back wheel and fits onto the seat post. Switch on the battery powered exhaust and release a stream of bubbles as you cycle! The position of the exhaust means that it won’t interfere with the child pedalling or the bike stand. The ultimate Bubble exhaust includes a universal adapter, so that it can fit to various bike sizes. Includes a 125ml Double Bubble Pot.