*The compression fabric is made to stretch for an optimal fit. If you are between two sizes, we recommend going with the smaller size.

How to Measure: Use a cloth tape measure or string and a ruler to measure the circumference of your un-flexed bicep where the top of the arm sleeve will be. Match your un-flexed bicep circumference to the chart above to determine your arm sleeve size. If you are between two sizes, size down. For more information, visit our sizing page.

• Seen on pro athletes
• Featured on ESPN
• Sports Nation gave it the 'Coolest Arm Sleeve Award'
• Worn in the Little League World Series
• Breathable fabric to keep you cool while your muscles stay warm and loose
• Single sleeve only. Designed for any sport.
• Proudly cut, sewn, and assembled in the USA - the way it should be!