5" - 6" - SMALL
6" - 6.5" - MEDIUM
6.5" - 7.5" - LARGE
Measure your wrist at the area just above the wristbone where the palm meets the forearm with a measuring tape. If you don't have one, use a string, mark the point where it connects, and measure with a ruler.
**Please keep in mind that these are compression sleeves, and fit tight. If you are on the higher end of the measurement scale, or if you just plan on wearing as more of an accessory, order a size up.