shoe: 1.6mm two layer black leather, white PVC side, blue shoe side，cold-persist -25°，inside: blue cloth，ankle-persist：high foamed cotton，more comfortable to wear。strength：resin strengthen，wear-persist，fashion，low price and high value。single shoe weight：310g ，short-holder universal speed skates，black。The tube is made of carbon steel, high strength, light, the blade is made of carbon steel, hardness HRC57-60, super hard and wear-persist, spray-paint, single blade weight: 326g