... skating technology...Using the same Angled Wheel Technology,our land roller could bring you:GREATER STABILITY: Over cracks, rough surfaces and ... , 41, 42, 43, 44, 45 Measurement: 45*39*21cmProduct Description Shoe Body: PE 3A(heat resistant, cold resistant, hight, fast, shock ... .W.:11/9kgs the newest 38 to 45 size LAND ROLLER SKATE