What Makes REP Fitness Apparel the Best Gym Clothes & Workout Clothes of 2025?

REP Fitness is for athletes, by athletes. Each piece of equipment and apparel, tested through rigorous training, competition, and sport, to discover how it holds up to the grind and how it can be improved upon. Pete Dirksing, VP of apparel for REP Fitness, is a shining example of this — with a closet packed with prototypes of fitness apparel in a rainbow of colors, fabrics, and styles, all waiting to be abused, washed, and stretched in every possible direction.

The lucky few pieces that survive Dirksing's running, cycling, and weightlifting protocol move onto the next round of tests: further abuse by our team of REP product testers with different athletic pursuits, different body shapes, and different opinions. The same attention to detail that goes into engineering our fitness equipment — like REP’s racks, barbells, and dumbbells — is poured into every thread of our apparel. And if REP’s staff of real-life lifters doesn’t want to use it, it doesn’t make the cut.  

Pillars of REP Apparel 

Just like your fitness journey, REP apparel is constantly evolving to bring you the best gear to support your training. “We’re doing some special things far above and beyond what you’d normally find in the industry,” Dirksing says. He breaks it down into four main categories: materials, fit, quality, and sustainability.

Materials 

Premium Selection: Premium fabrics, high quality manufacturing partners, and best-in-class construction methods makes for high-end apparel that lasts. Plus, selected components such as stretchability, durability, moisture-wicking, and anti-odor technology ensures your workout apparel keeps up with your training.

Custom Development: When existing materials don't meet our high standards, we take the initiative to develop new fabrics to enhance athletic performance and comfort. This hands-on approach to material innovation sets REP apart from other brands.  

Fit and Design 

Real-Life Testing: All products are rigorously tested by our diverse, in-house team that lives the fitness lifestyle, ensuring that each item performs well in real conditions —whether it's squat-proof functionality, handstand pushups against a cinder-block wall, or comfort during a 10K run. 

Style and Versatility: Our apparel is designed to be as versatile as it is functional, perfect for both gym sessions and casual outings — like the Men's Apollo Joggers which can take you from your lift, to brunch, to recovery on the couch. With thoughtful features like no-bounce zipper pockets, options for drawstring placement, inclusive sizing, and multiple inseam options, ensuring function and style work seamlessly together.

Quality  

Quality Assurance: Each fabric undergoes third-party testing for colorfastness, anti-pilling, shrink resistance, and more. However, we go beyond lab tests, incorporating real-world test scenarios to ensure the materials withstand the rigors of even the most demanding fitness environments. The multi-level testing assures the material does what it’s supposed to do, on and off paper. It takes about one full year to develop an apparel piece, including months of real-world testing. 

Unmatched Inspection Standards: We inspect 100% of our apparel. Every single piece, not just a sample batch -- an incredibly rare practice in the industry — to ensure that each product meets our standards before reaching you. This comprehensive inspection process goes above and beyond the norm. 

Sustainability

Environmental Commitment: REP is committed to sustainability, using recycled materials for fabrics wherever possible. Our products feature recyclable hangtags and are packaged and shipped in 100% recyclable and biodegradable poly-bags and mailers, reflecting our dedication to reducing environmental impact.  

Anti-Fast Fashion: We invest in high-quality components like YKK™ zippers (the best of the best) and we reinforce stress points to prevent tearing. Our approach ensures that REP apparel not only performs well but also lasts longer than typical fitness wear. This “anti-fast fashion” approach ensures that each piece is durable, avoiding the cycle of disposable wear and contributing to a more sustainable wardrobe. 

Why Choose REP's Workout Clothes? 

REP Fitness apparel isn't just about good-looking clothes; it's about crafting solutions for the active lifestyle. Unlike many clothing lines, we are proud to have our own in-house design, development, and pattern-making team. We aren't sourcing pre-made styles. Everything we release has been designed from scratch. This means REP isn't beholden to any factory and that we own every pattern and detail, so we can be certain that each product not only fits perfectly but also stands up to the demands of vigorous workouts.  

By choosing REP, you're not just purchasing gym wear; you're investing in high-performance apparel proudly designed by athletes, for athletes.  

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