Specification: Material : PU Leather Type: Fashions Classic Double-row Roller Skates Color: Pink Wheels: High Quality Black PU Wheels (Flash Wheels) Bearing: ABEC-7 Bearing Closure Type: Lace-Up Weight: About 2.5-3kg/5.51-6.61lb Size Chart Heel To Toe(cm/inch) - US Size（Women）- Youth/Men Size 32--21cm/8.46inch---Youth 2 33--21.5cm/8.66inch---Youth 3 34--22cm/8.85inch---Youth 3.5 35--23cm/9.05inch---Women's 5/ Youth 4 36--23.5cm/9.25inch---Women's 6/ Youth 5 37--24cm/9.45inch---Women's 7/ Youth 5.5 38--25cm/9.84inch---Women's 8/ Men's 6.5 39--25.5cm/10.03inch---Women's 8.5/ Men's 7 40--26cm/10.23inch---Women's 9/ Men's 7.5 41--27cm/10.62inch---Women's 10/ Men's 8.5 42--27.5cm/10.82inch---Women's 10.5/ Men's 9 43--28cm/11.02inch---Women's 11/ Men's 9.5 44--29cm/11.41inch---Women's 12/ Men's 10.5 45--29.5cm/11.61inch---Women's 13/ Men's 11 Products Packing Including: 1 Pairs x Roller Skates + 2 x ABEC-7 Bearing+ 1 x shoe bag+1 x wrench Attention 1. Chromatic aberration existed due to different display setting. 2. There may be 1-2cm differences as manual measurement. 3.Please refer to our size chart to choose the right size for you according to your foot length. 4. Please keep the small tools in the package, the wrench can adjust the tightness of the wheels. 5.When you find that the wheel does not light up, please try to adjust the tightness of the wheel screws so that it flashes again. 6.Roller skates uitable for asphalt road, concrete road, marble road, grass road(Tip: glide on smooth surfaces to reduce wear and tear).