Specification :
Gender : Women  , Men , Teens
Material : Microfiber, Nylon
Function : Anti-slip , Shock-Absorb 
Size (Palm circumference)
Medium: 19-20 CM / 7.48-7.87 Inches
Large:     21-22 CM / 8.27-8.66 Inches
X-Large: 23-24 CM / 9.06-9.45 Inches
Due to manual measurement, it"s allows 0.12(in) discrepancy.