1.P.U. wheel,more elastic or shockproof than that of P.P. material; 2.bracket with 6 colors available: red/black/pink/dark-blue/green/orange-yellow; 3.front&side flashing light with 3 colors: red/yellow/blue; 4.an adjusted device makes it apt to any sized shoes; 5.easy take,easy take on/off,easy learn; 6.rolling smoothly, turn flexibly with good brakes; 7.multi-functional enjoyment,such as skating,circumgyrating etc.; 8.eye-catching flashing effect while skating because a magnetic-generating device will make you highlight and different from others; 9.component: general bearing, P.P.bracket,handbag,flashing roller, elastic belt,manual instruction,gift box; 10.Package: 1 pair/ color box, 20 pairs/ctn, 11.Meas: 51*21*39cm, 12.N.W.:17.00KGS, G.W.:18.00KGS; 13.Loading: 650ctns/20FT, 1300ctns/40HQ.