BUILT TO GRIND. MADE TO OUTLAST.

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

WHY FLX?

Because shortcuts don’t survive your kind of training.

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

• 4-way stretch built for full range under load

• Tough fabric takes on barbell friction and turf burn

• Perforated back panel dumps heat mid-WOD

• Secure zip pocket + deep front stash

• No ride-up. No excuses.

You don’t cut corners. Neither did we.

Choose your inseam. Lock in your code. FLX15 ends soon.

Athlete mid-front rack lift at outdoor competition wearing Surf Green FLX Pro Short.

No Excuses. Just Execution.

Watch FLX Pro hold up under it all — and never once tap out.

FLX15 = 15% OFF the short that never quits. Ends Sunday.

Athlete performing a handstand walk on soft boxes wearing black FLX Pro Shorts.
Training in the FLX Pro Short – 7 inch inseam – Black
Man deadlifting in a gym, wearing navy blue FLX Pro Shorts and a white CHLKDUP tee
Man riding an assault bike in a dark gym, wearing white FLX Pro Shorts and a red cap.
Athlete holding a back extension on GHD machine, stretching in blue FLX Pro Shorts.
Athlete mid-front rack lift at outdoor competition wearing Surf Green FLX Pro Short.

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

Regular price$48.00
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Shipping calculated at checkout.

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  • Low stock - 2 items left
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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.

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Ex: Shipping and return policies, size guides, and other common questions.

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Testimonials

★★★★★

“Go-to shorts for everything — CrossFit, weightlifting, military training, even long runs and backpacking. They outperform every other pair I’ve owned. The zip pocket keeps my phone locked in. Durable. Reliable. Just better.”

JC Richardson
Ft. Walton Beach, FL
★★★★★

“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

FAQs

The 5” inseam hits mid-thigh — made for maximum mobility.
The 7” inseam offers more coverage without restricting movement.

Both have a scalloped cut to stay out of your way. No ride-up.

Made for both.
We’ve stress-tested them under barbells, sandbags, box jumps, and sprint intervals.

If you move hard — they’ll hold up.

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.