How to determine your correct size:
1. To determine the length of your arm, measure from the top of your bicep to your wrist.
2. To determine your bicep circumference, measure around (“the circumference”) of your bicep.
3. Now identify what size is best for you based upon your arm length and bicep circumference. Please note that the arm warmer stretches comfortably slightly over 1 inch over the bicep.
Sizing Example: One of our male customers has an arm length (from bicep to wrist) of 14 inches and a bicep circumference of 13 inches. Since the arm warmer stretches slightly over 1 inch around the bicep, size XL fits him comfortably.