

9/11 Never Forget Blackout Arm Sleeve

Who needs endorsement deals? Not CSS. Our Baseball Arm Sleeve is so good that players in the majors buy from us. That’s right! While other brands pay athletes to wear their stuff, we have all-stars and future hall of famers buying our baseball sleeve. That says a lot right there.
So, what makes our Baseball Sleeve so good? It starts with the fabric. We choose to use Performance Nylon material which naturally breathes and offers wicking and UV protection technology. The real secret is the compression. Not only does this make the sleeve look good when worn, but it also keeps the muscles warm and loose which makes you perform better.
Lastly we offer over 30 color options and many sizes to ensure you get to sport your colors in a size that actually fits. Proper fit is crucial for compression to work properly while not being too loose or tight.
Proudly Made 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.