Roller Derby Boys' FIRESTAR Roller Skates Sport shoe . Padded collar. Lace-up design with VELCRO&reg; brand closure power strap. Lightweight torsion beam chassis. Excellerator 608ZB bearings. 54 mm urethane wheels. Model: 1378. Imported. Comfort Sport Design boot Synthetic uppers with cushioned liner and padded collar Classic laces and power strap for a great fit Lightweight, patented Torsion Beam chassis provides excellent control for turns and strides on the rink or sidewalk Non-marking toestop on both skates 54mm urethane indoor/outdoor wheels Smooth rolling G-Force 608ZB carbon bearings Use these skates at the roller rink, or outside on paved trails, sidewalks, and boardwalks If you are a beginner, skating lessons at the rink or park are a popular way to learn Find a local rink at web.rollerskating.com/search New skaters will often try skating first inside the house, starting on carpet to go slower, then try rolling on hard floors Check wheel and truck tightness and adjust as needed prior to use Make sure wheels are clean before using at the rink You can improve balance, agility, strength and endurance, and have fun while doing it It is a low impact exercise that can be done almost anywhere It&#039;s perfect for individuals or family and friends who want to stay healthy and active Benefits include stamina, muscular strength and endurance, flexibility, balance, weight control, muscle definition, digestion, and sleep Inline skating at a speed of 20MPH can burn 360 calories/hour To help prevent injury, always wear a helmet and protective gear (wrist guards, knee pads, and elbow pads) Wider feet, growing feet, or half sizes may wish to go up a size Wear thicker socks Add a shoe insert/insole (sold separately)