Small: (Vertical size: 26 mm)
 Silver: 16 yuan/pair
 Gold: 18 yuan/pair
 Medium: (Vertical size: 31 mm)
 Silver: 17 yuan/pair
 Gold: 19 yuan/pair
 Large: (Vertical size: 36 mm)
 Silver: 18 yuan/pair
 Gold: 20 yuan/pair