Size	Upper Mouth		Lower Mouth		Length		Weight
	cm	inch	cm	inch	cm	inch	kg	lb
M	32	12.60	27	10.63	32	12.60	50-65	110.23-143.30
L	35	13.78	29	11.42	32	12.60	65-75	143.30-165.35
XL	38	14.96	31	12.20	32	12.60	75-100	165.35-220.46

Please according to your own measurements to choose your suitable size.

Color: White-Sapphire Blue, Black Red, Black Purple, Black Orange, Black Gray, Black Green, Sky Blue-Black, Orange Red, Rose Red
Size: M, L, XL
Material: Bamboo Charcoal Fiber
Weight: 150g