Method for choosing the size,According to palm circumference not including thumb,refer to left size chart. XS(6.7"-7.1",17cm-18cm) S(7.1"-7.7",18cm-19.5cm) M(7.7"-8.3",19.5cm-21cm); L(8.3"-8.9",21cm-22.5cm) XL(8.9"-9.5",22.5cm-24cm)XXL(9.5"-10",24cm-25.5cm) DURABILITY: Constructed with a top grade Synthetic leather and super grip print process to ensure durability PERFECT FIT: TPR technology provides excellent metacarpal and knuckle protection and allows gloves to maintain their flexible and snug fit. ALL SIZES: These gloves come in all youth and adult sizes so that you can pick the perfect fit for youColor: Black Manufacturer: Shenyang Seibertron E-Commerce Co., Limited Model Number: pk-fba-TPR-BangQiu-hei-S Package Quantity: 1 Part Number: pk-fba-TPR-BangQiu-hei-S Size: Adult SALL SIZES: These gloves come in all youth and adult sizes so that you can pick the perfect fit for you Adult Size Method for choosing the adult size,According to palm circumference excluding thumb(Refer to adult product's second image size chart). XS(6.7"-7.1",17cm-18cm) ;S(7.1"-7.7",18cm-19.5cm) M(7.7"-8.3",19.5cm-21cm); L(8.3"-8.9",21cm-22.5cm) XL(8.9"-9.5",22.5cm-24cm);XXL(9.5"-10",24cm-25.5cm) Youth SizeMethod for choosing the youth size,According to palm Length+Width refer to second image youth size chart. XS(Length 5.4"-5.7",13.7cm-14.5cm | Width 2.45"-2.6",6.2cm-6.6cm); S(Length 5.7"-6.0",14.5cm-15.2cm | Width 2.6"-2.75",6.6cm-7cm) M(Length 6.0"-6.3",15.2cm-16cm | Width 2.75"-2.95",7cm-7.5cm); L(Length 6.3"-6.6",16cm-16.8cm | Width 2.95"-3.15",7.5cm-8cm) XL(Length 6.6"-7",16.8cm-17.8cm | Width 3.15"-3.3",8cm-8.4cm) Centimeter data has less deviation than inch data + ANTI-SLIP SILICONE FINGER PRINT FOR SUPERIOR GRIP + TPR RUBBER ON FINGERS AND BACK OF HAND FOR ANTI-IMPACT PROTECTION + HOOK AND LOOP CUFF CLOSURE DESIGN MAKES GLOVES EASY TO WEAR AND TAKE OFF + VENTILATION HOLES ON THE PALM, BACK OF HAND AND SIDE FINGERS FOR MAXIMUM BREATHABILITY AND KEEPING HANDS DRY + REFLECTIVE TAPE ON BACK OF HAND + PADDING ON THE PALM USED FOR ABSORBING ENERGY FROM BATTING ACTIVITY, PVC MATERIAL COVERS PAD FOR MAXIMUM DURABILITY AND ANTI SLIP FUNCTION