hiboy adjustable inline skates with all light up wheels, outdoor & indoor illuminating roller skates for boys, girls, beginners hiboy specifications: <br> shoes shell material: pp<br> bearings: abec-7<br> wheels: 82a polyurethane<br> frame: reinforced aluminum<br> closure: standard lace, strap, high-strength buckle<br> shoes cloth surface material: polyester<br><br> package content:<br> a pair of x inline skate<br> an extra wheel with bearing<br> an extra brake pad<br> 2 x bolts for brake<br> 2 x bolts for wheels<br> 2 x allen wrench<br> 1 x user manual<br><br> tips:<br> 1. check the screws/bolts that secure the wheels to make sure they are tight.<br> 2. spin wheels to check that bearings are spinning freely.<br> 3. inspect brake pads for wear and tightness. inspect all other brake components to ensure that they are secure and in working order.<br> 4. beware of loose laces while skating.<br>