This inline skate features a vibration-absorbing composite frame that is interlocked with the base, helping to keep children balanced with its lower ground height. Five full sizes with adjustable options ensure these skates can be used for more than one season, and K2's Speed Lacing System makes putting on and taking off the skates a breeze. The pad pack protects your little ones in case they fall. Each pad is anatomically shaped, made with abrasion-resistant material and shock-absorbing gel inserts.