A summer without roller skates isn't a real summer. With these roller skates from Nijdam, you choose how you want your rollers attached, so they can be made for inliners, quads & trikes. This means that with this 3-in-1 roller skate, you can learn to crawl, and also go flying on hot summer days. Information Brand: Nijdam Model: Inline Quad Skate Type: Roller skates Size: 27-30 Colour: Gray & red Material: Plastic, metal & rubber Closure function: Double quick release & velcro Wheel diameter: 63 x 24 mm Wheel hardness: 82A CE mark: Yes