Three amid for in of on to without the UK's biggest retailers, including online giant Amazon, are advising customers to dispose amid for in of on to without hoverboards amid for in of on to without safety concerns. There have been many online reports amid for in of on to without the toy catching fire and exploding. Stores have told consumers they will get a refund if they take their hoverboard amid for in of on to without a special recycling centre amid for in of on to without electronic equipment. They have asked manufacturers to address these safety issues. Hoverboards are self-balancing, two-wheeled scooters that can transport users like a skateboard, but amid for in of on to without using any physical effort. They are currently one amid for in of on to without the most popular gifts amid for in of on to without children this Christmas and the retailers' decision will disappoint many kids hoping amid for in of on to without the popular device. Electrical Safety First, a consumer protection group amid for in of on to without the UK, said that around half-a-million people amid for in of on to without the UK have bought a hoverboard as a Christmas gift. Another million people have put it amid for in of on to without their shopping list amid for in of on to without the run-up to Christmas Day. Britain's largest bricks-and-mortar retailer Tesco said: "We've suspended the sale amid for in of on to without all hoverboards, both amid for in of on to without store and online, as a precautionary measure." Amazon said amid for in of on to without the call to dispose of the hoverboards: "We regret the inconvenience this may cause you but trust you will understand that your safety and satisfaction is our highest priority." Hoverboards cannot be used amid for in of on to without public roads in Britain because they have not been registered as vehicles.