You can combine them freely. Please let us know your desired colors in the comments. 2 pairs set: 1500 yen 3 pairs set: 2175 yen 4 pairs set: 2800 yen 5 pairs set: 3375 yen Size (EUR): Approximately 36-39 Colors: A: White B: Black C: White x Pink line D: Black x Purple line E: Red *As these are parallel imports from overseas, there may be slight individual differences and quality issues compared to Japanese products. Also, as they are imported products, there may be slight fraying or loose stitching. *As these are overseas products, please refrain from purchasing if you expect the perfection of Japanese products. *Please note that the color may appear slightly different from the actual product due to screen settings.