

You runners asked for it and CSS delivered. The CSS Running Arm Sleeves are available in over 30 popular colors and in 6 sizes. This truly is where performance and style meet. When designing this sleeve we looked at more than just style. The fit of sleeve is ergonomically designed so that it fits and feels like a second skin while providing the benefits of compression technology. We sew elastics at the top of the sleeves to prevent any slipping when running.
We chose to use Performance Nylon fabric instead of cheaper polyester for a couple reasons. First, nylon has a softer, less itchy feel which is important as you start to sweat, especially on long runs. Second nylon typically has a more vibrant color as it is dyed instead of printed.
When it comes to performance and style, nobody beats Custom Sports Sleeves. We proudly make each running sleeve here in the USA.
Benefits
- 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!
Arm Sleeve Sizing

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, we recommend going with the smaller size.
Youth Small | 5"-7" Bicep Circumference | About 12" Actual Sleeve Length |
Youth Medium | 7"-9" Bicep Circumference | About 14" Actual Sleeve Length |
Adult Small | 8"-10" Bicep Circumference | About 15" Actual Sleeve Length |
Adult Medium | 10"-12" Bicep Circumference | About 16" Actual Sleeve Length |
Adult Large | 12"-14" Bicep Circumference | About 17" Actual Sleeve Length |
Adult X-Large | 14"+ Bicep Circumference | About 17" Actual Sleeve Length |
The compression fabric is made to stretch for an optimal fit. If you are between two sizes, we recommend going with the smaller size.



2 Decades | Over 500,000 Athletes
KEEP IMPROVING
Since 2008 we've been on a mission to help athletes at all levels perform and look their best. We're always looking to up our game by creating the best compression gear and offering the latest looks, so that you can keep improving your game.