Mens Athletic Shorts

Men's Athletic Shorts Built For Real Training

Every silhouette in this collection is designed by fighters who actually train in it. You get two styles: our lightweight 5″ mesh shorts for hot sessions and open-mat days, and 2-in-1 hybrid shorts that pair an outer shell with a built-in compression liner — locked in through takedowns, sled pushes, and heavy bag rounds.

The fabrics are moisture-wicking and quick-drying, waistbands are elastic with an internal drawcord so nothing shifts mid-round, and pockets hold a phone without bounce. Prints run from American flag and camo to limited seasonal drops — all cut, printed, and sewn to order in the USA in about 3–6 business days.

What are the best gym shorts for MMA training?

The best gym shorts for MMA training combine a non-restrictive cut, a secure elastic-plus-drawcord waist, and fabric that wicks sweat instead of soaking it. For grappling-heavy days, most fighters prefer the compression liner in our 2-in-1 shorts; for striking and hot-weather work, the lighter 5″ mesh shorts breathe better. We break the tradeoffs down in The Best Gym Shorts for MMA Training.

Do King Killers shorts run true to size?

Yes — customers consistently report both styles run true to size. Stay true for a locked-in athletic fit, or size up for a relaxed gym-to-street fit. Every pair ships free over $100 and carries the same 30-day money-back guarantee we put on everything we make.