... Customer's, Our own color ring 6. Hair density: Extra light, light, medium light, medium, medium heavy, heavy, extra heavy 7. Wave&curl: Straight(silky ... straight, natural straight, kinky straight), yaki(light yaki, regular yaki, heavy yaki), wave(body wave, deep ... PU NPU etc 9. Base color: Black, dark brown, medium brown, light brown, beige, transparent, flesh etc 10. Base size: 5 ...