Roller Derby Star 600 Men's Quad Skate, Size Freestyle comfort fit boot with padded lining, reinforced heel support, and lace closure RTX Pro Chassis 56mm Urethane wheels 608ZB Sealed bearings Freestyle Comfort Fit boot features soft hightop design with cushy padded lining Synthetic faux leather uppers Classic laces for a great fit Lightweight chassis with urethane cushions and real trucks Great control for turning, cruising, and dancing Non-marking toestop on both skates 56mm urethane indoor/outdoor wheels Smooth rolling 608ZB carbon bearings Use these quad roller 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) Half sizes may size down for a more snug fit Wear thinner socks Wider feet, growing feet, or half sizes may wish to go up a size Wear thicker socks Add a shoe insert/insole (sold separately)