You are clear for take off; Fire up your afterburner and get your spark on with the high-flying Jetts. Just step up, strap down and take off with these easily adjustable, always awesome, sparking heel wheels to transform your ordinary trainers into the hottest way to roll. Heavy-duty polymer quick click frame with hook and loop strap. Easily removable and replaceable spark pads. Proprietary 50mm urethane wheels with sealed bearings. Fits uk shoes from children 11.5 through to adult size 11. Includes: spark pads and skid pads. Shoe size: size 11.5 child through to size 11 adult. D14cm. Weight 0.53kg. Maximum user weight: 80kg. For ages 8 years and over. WARNING(S): Not suitable for children under 3 years old. Only for domestic use. Protective equipment (helmet, knee pads and elbow pads) should be worn, not to be used in traffic.