“I don’t follow trends—I outlast them.” Momentous x Arnold Schwarzenegger
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Limited Edition
Front view of a charcoal gray short-sleeve performance T-shirt with raglan sleeves. The shirt features a minimalist design with the word “TREND_PROOF” printed in clean white uppercase lettering across the chest, with a subtle red underscore between the words. A small stitched emblem detail appears near the left shoulder seam. The collar label reads “RHONE.” The fabric appears lightweight and athletic with a smooth, structured drape.
Back view of a charcoal gray athletic T-shirt with a clean, minimal design. Centered high across the upper back is a small orange Momentous logo and wordmark. To the right of it is a white signature graphic, referencing Arnold Schwarzenegger. The shirt has short sleeves and a straight hem, maintaining a sleek performance fit.
TrendProof Tee
TrendProof Tee
Black-and-white archival-style photograph of Arnold Schwarzenegger in a gym setting, shown from the waist up with muscular build, slightly sweaty hair, and intense expression. He stands shirtless holding a weight plate, conveying strength and discipline. Overlaid white text reads: “TrendProof isn’t about what’s new — it’s about what’s proven.” Below, smaller text explains the collaboration with Arnold and Momentous, emphasizing fundamentals, uncompromising standards, and daily consistency.
Men’s shirt size guide displayed in a table with columns for Size, Chest, Waist, and Hip measurements. Size small (S) fits chest 34–37 inches, waist 28–30 inches, and hip 36–37 inches. Medium (M) fits chest 38–40 inches, waist 31–33 inches, and hip 38–40 inches. Large (L) fits chest 41–43 inches, waist 34–36 inches, and hip 40–42 inches. Extra large (XL) fits chest 44–46 inches, waist 37–39 inches, and hip 43–45 inches. Double extra large (XXL) fits chest 47–49 inches, waist 40–44 inches, and hip 45–48 inch
Front view of a charcoal gray short-sleeve performance T-shirt with raglan sleeves. The shirt features a minimalist design with the word “TREND_PROOF” printed in clean white uppercase lettering across the chest, with a subtle red underscore between the words. A small stitched emblem detail appears near the left shoulder seam. The collar label reads “RHONE.” The fabric appears lightweight and athletic with a smooth, structured drape.
Back view of a charcoal gray athletic T-shirt with a clean, minimal design. Centered high across the upper back is a small orange Momentous logo and wordmark. To the right of it is a white signature graphic, referencing Arnold Schwarzenegger. The shirt has short sleeves and a straight hem, maintaining a sleek performance fit.
TrendProof Tee
TrendProof Tee
Black-and-white archival-style photograph of Arnold Schwarzenegger in a gym setting, shown from the waist up with muscular build, slightly sweaty hair, and intense expression. He stands shirtless holding a weight plate, conveying strength and discipline. Overlaid white text reads: “TrendProof isn’t about what’s new — it’s about what’s proven.” Below, smaller text explains the collaboration with Arnold and Momentous, emphasizing fundamentals, uncompromising standards, and daily consistency.
Men’s shirt size guide displayed in a table with columns for Size, Chest, Waist, and Hip measurements. Size small (S) fits chest 34–37 inches, waist 28–30 inches, and hip 36–37 inches. Medium (M) fits chest 38–40 inches, waist 31–33 inches, and hip 38–40 inches. Large (L) fits chest 41–43 inches, waist 34–36 inches, and hip 40–42 inches. Extra large (XL) fits chest 44–46 inches, waist 37–39 inches, and hip 43–45 inches. Double extra large (XXL) fits chest 47–49 inches, waist 40–44 inches, and hip 45–48 inch

TrendProof Tee

From the TrendProof Collection with Arnold Schwarzenegger

  • Rhone® Reign Tee with Arnold’s signature
  • Soft, sweat-wicking, UPF 50+
  • Wear the standard — not the trend
Size: Men’s Tee
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Free shipping on US orders $75 +

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Rhone® Reign Tee. Built to Endure.

This performance tee blends soft, sweat-wicking Reign fabric with GOLDFUSION® anti-odor technology and UPF 50+ protection—engineered for long sessions, long days, and long-term durability.

Consistency requires commitment, not shortcuts. This soft, performance tee transitions seamlessly from workout gear to weekend wear, ensuring that you’re ready for anything the day throws at you. 

Why You’ll Love It: 

  • Rhone Reign Tee with Arnold Schwarzenegger’s signature + Momentous logo
  • TrendProof branding shows your commitment to never taking shortcuts
  • Soft, sweat-wicking fabric offers comfort at the gym and around town
  • GOLDFUSION® anti-odor technology allows for fresh wear after workouts and between washes
  • UPF 50+ sun protection during hot summer runs
  • Raglan sleeves enhance range of motion
  • Chafe-free seams prevent discomfort during intense gym sessions

Slim fit with raglan sleeve for range of motion. 

How to Measure:

  • Chest: Measure under your arms around the fullest part of your chest, keeping the tape measure parallel to the floor.
  • Waist: Measure around your natural waist, keeping the tape measure parallel to the floor. This is usually the narrowest part of your waistline.
  • Hip: Measure across the widest part of the hip, keeping the tape measure parallel to the floor.

*Model is 6’2” wearing a size Medium.

  • Exclusive Reign fabric
  • GOLDFUSION® Anti-Odor Technology for more wears between washes
  • Made of Polyamide, Polyester, Elastane
  • Machine wash cold with like colors
  • Lay flat to dry
  • Iron on low temperature
  • Do not bleach, tumble dry, iron, dry clean or use fabric softener
Be TrendProof
Limited Edition
TrendProof Shaker Bottle
TrendProof Shaker Bottle
  • YETI® Yonder x Helimix® Shaker
  • BPA-free + leakproof construction
  • Fuel the work that lasts
Limited Edition
TrendProof Hat
TrendProof Hat
  • Cotton Twill Cap with Arnold’s Signature
  • Snapback adjustment + reinforced stitching
  • Built to show up, day after day
Limited Edition
TrendProof Tank
TrendProof Tank
  • Rhone® Serene Tank with Arnold’s Signature
  • GOLDFUSION® anti-odor tech + UPF 50+
  • Build longevity through daily discipline
Arnold
Arnold's Stack
  • Creatine to support strength and muscle
  • Whey to support recovery and consistency
  • Vitamin D3 to support bones, immunity + resilience
Limited Edition
Whey Protein Isolate - Limited Edition
Whey Protein Isolate - Limited Edition
  • 20g of clean protein per serving
  • Limited-run flavors. No artificial sweetners
  • NSF Certified for Sport®

Frequently Asked Questions

TrendProof is a commitment to the fundamentals that endure. Inspired by our partnership with Arnold Schwarzenegger, this collection captures Arnold’s guiding ethos: trends come and go, but greatness lasts forever. Hard work works. Discipline wins. Consistency carries the day.

Stop chasing the new—trust the proven.

The shirt features an athletic, tailored fit designed to complement the shoulders and chest while allowing full range of motion. Most customers find it true to size. If you prefer a more relaxed fit—or have a broader, muscular build—consider sizing up.

GOLDFUSION® anti-odor technology helps reduce odor buildup, allowing for fresher wear between washes without compromising comfort or fabric integrity.

All TrendProof Collection items are limited edition and are not eligible for returns or exchanges. If you have questions about sizing or fit before purchasing, we encourage you to contact our Customer Service team—we’re happy to help ensure you choose the right option.

At this time, apparel from the TrendProof Collection is available for shipping within the United States only. We are unable to ship these items internationally.

TREND_PROOF

In our industry, trust is the most valuable currency there is. For decades, Arnold Schwarzenegger has gained and maintained the trust of those looking to live better, for longer—all by embodying one simple truth: real progress comes from doing what works, exceptionally well, with relentless consistency. As he puts it, “I don’t follow trends—I outlast them.”