Description: adjustable: the children's in-line skates are easy to adjust and can grow with the children's feet over 4 shoe sizes from size 39-42 at the touch of a button thanks to the 1-click system safety and comfort: our roller skates have triple protection system, includes standard lace, velcro strap & high-strength buckle sturdy aluminum frame: the supportive aluminum bracket will bear more pressures to protect your feet, which means the guarantee for kids comfortable: the rollerblades with mesh surface are breathable. Feel cool when you are skating without blister inline skates could be used as a mode of transportation going to and from school. Moreover, on weekends, grab your best friends, strap on those inline roller skates and roll with lots of styles, endless fun and unmatched comfort! feature: type: shoe skate color: red material: aluminum size: l39~42 quad skates breathable shell synthetic wheel adjustable size with double closure package include: 1 pair shoe skate