You can combine them freely. Please let us know your desired colors in the comments. Set of 2 pairs: 1450 yen Set of 3 pairs: 2100 yen Set of 4 pairs: 2700 yen Set of 5 pairs: 3250 yen Set of 6 pairs: 3750 yen Size: Approximately 27cm-29cm Colors: A: White B: Black C: Gray D: Black x White Logo E: Black x Gold Logo F: Blue *As these are overseas parallel imports, there may be slight individual differences or quality issues compared to Japanese products. Also, as they are imported products, there may be minor loose threads or uneven stitching. *As these are overseas products, please refrain from purchasing if you are looking for the perfection of Japanese products. *Please note that the colors may appear slightly different on screen compared to the actual product.