Glove Sizing Chart
To determine the correct size, measure the distance across the lowest knuckles (the knuckles you punch with) of the 4 upper fingers (all the fingers except the thumb). Measure by laying knuckles flat on a ruler. 

Adult Medium: 3-3/8“ - 3-5/8”

See Sizing Chart

Colors
Black: 8181103
Red:   8181203
White: 8181303
Blue:   8181403
Silver: 8181503
Pink:   8181603