Athlete holding a back extension on GHD machine, stretching in blue FLX Pro Shorts.

BUILT TO GRIND. MADE TO OUTLAST.

The short that doesn’t quit. Grit-tested by elite athletes and everyday grinders alike.

Why FLX?

Because your training doesn’t leave room for excuses.

Every stitch on this short was built to handle heat, pressure, and movement — without compromise.

  • 4-way stretch for full range under load
  • Heavy-duty fabric for barbell friction and turf burn
  • Breathable back panel to dump heat mid-WOD
  • Deep front pockets + secure zip stash
  • No ride-up, no distractions

Train without compromise. Choose your inseam and color below.

Man riding an assault bike in a dark gym, wearing white FLX Pro Shorts and a red cap.
Man deadlifting in a gym, wearing navy blue FLX Pro Shorts and a white CHLKDUP tee

No Excuses. Just Execution.

Watch the FLX Pro Short in action. 4-way stretch. No ride-up. Built to hold up under pressure.

What They're Saying

★★★★★

YO! These shorts are fire! Can we collab?

Nate Dodd, Owner - CrossFit Trivium
Brentwood, TN
★★★★★

The shorts are dope!!! Love them!! They scream quality!!

Scotty DeMott
Moultrie, GA

FLX Pro Short — Built for the Work. Made to Outlast.

$48.00

Built to grind. Built to win.

The FLX Pro Short isn’t for flash. It’s for function. Designed to take a beating and come back for more — every squat, sprint, and sandbag rep. No gimmicks. No flair. Just gear that does its job so you can do yours.

Key Features:

  • Scalloped thigh cut for unrestricted movement under load

  • Perforated rear panel to dump heat under pressure

  • Dual side pockets + zippered stash pocket in back

  • Subtle CHLKDUP 3C mark on right thigh — earned, not flaunted

  • Worn in comp floors. Built for the trenches.

Stop chasing hype. Start showing up.

This short doesn’t quit. Neither should you.

FAQs

The 5” inseam hits mid-thigh — made for maximum mobility.

The 7” inseam offers a little more coverage without restricting movement.

Both are scalloped-cut to stay out of your way. No ride-up. No distractions.

Click the Size Chart above the Add to Cart button.

If you’re between sizes, size up for more room — especially if you train heavy.