Tried and tested, stable and safe: Muuwmi's adjustable children's roller skates provide years of skating experience as they grow with the child. The impact-resistant PP, high-impact-resistant frame and high-rebound molded PU wheels ensure comfortable and fast rolling. The wheels measure 70 x 22 mm and have ABEC 5 ball bearings. The size can be easily adjusted with the push of a button. The breathable, soft boot with a ventilation system provides excellent comfort, while the quick lacing system and Power Strap allow for easy on and off, so the child does not need help to get on. The roller skates come with a complete set of protective gear, including size S wrist, knee and elbow protectors.