Why Do NFL Players Wear Arm Sleeves?

Los Angeles Rams - Double arm sleeves? Oh, it's on.

Justin Jefferson's all-time catch gloves, arm sleeve to be displayed at Pro Football Hall of Fame - CBS Minnesota

NEW! Pair NFL Team Strong Arm Sleeve Sleeves Football Fan Gear Sunblock

Why do @NBA players wear arm sleeves? #nba (some clips via @S. Sami)

5 ways NFL athletes keep from freezing on the field

Battle Ultra-Stick Full Arm Sleeve – Compression Support Sleeves with Ultra-Tack Grip – Forearm and Elbow Protection, Single, Black, Youth Small/Medium : Sports & Outdoors

To sleeve or not to sleeve? Giants players split on how to gear up for cold

NBA on Complaints About Sleeves: If 'Players Don't Want to Wear

Ten ways NFL players rig their uniforms - ESPN

Why Stephen Curry wears a full shooting sleeve on one arm during Warriors games