100% synthetic leather palm back,100% nylon thumb,50% cotton, 50% polyester lining,100% polyester Imported Method for choosing the size,According to palm Length+palm circumference refer to left size chart. Centimeter data has less deviation than inch data. Measure palm Length: Measure the length of your hand from the base of your palm to the tip of your middle finger. Measure palm circumference: Wrap a measuring tape tight around your knuckles to measure the circumference of your hand. Youth XS(palm length 5.28"-5.59",13.4-14.2CM|palm circumference 5.28"-5.59",13.4-14.2CM); Youth S(palm length 5.51"-5.79",14-14.7CM|palm circumference 5.59"-5.91",14.2-15CM); Youth M(palm length 5.79"-6.1",14.7-15.5CM|palm circumference 5.71"-6.3",14.5-16CM); Youth L(palm length 6.02"-6.3",15.3-16CM|palm circumference 6.1"-6.69",15.5-17CM); Youth XL(palm length 6.38"-6.61",16.2-16.8CM|palm circumference 6.5"-7.09",16.5-18CM); Adult S(palm length 7.09"-7.48",18-19CM|palm circumference 6.89"-7.48",17.5-19CM); Adult M(palm length 7.36"-7.68",18.7-19.5CM|palm circumference 7.28"-8.07",18.5-20.5CM); Adult L(palm length 7.76"-8.07",19.7-20.5CM|palm circumference 7.87"-8.66",20-22CM); Adult XL(palm length 7.99"-8.27",20.3-21CM|palm circumference 8.46"-9.25",21.5-23.5CM); Adult XXL(palm length 8.15"-8.46",20.7-21.5CM|palm circumference 9.06"-9.84",23-25CM); Durable synthetic leather palm keep hands cool and comfortable.Flexible thermal plastic rubber (TPR) closure provides a secere fit to the wrist.Index finger tip supports touchscreen. Anti slip Unweighted basketball gloves, help improve your ball handling and catching.Basketball training gloves that help strengthen your fingers and hands.Great basketball training aid for individual and team ball handling drills.