Size Chart-Bodybuilding

Buffery® Flex Uniforms™ - Bodybuilding Posing Trunks

Sizes are designed to fit the following male bodybuilding competitor measurements (not a novelty item). Our sizes are based on actual waist measurements and not popular waist "sizes." The waistband is stretchy so there is a size RANGE.

How to measure: Measure right at your natural waistline, around the top of your waistband - place the tape measure about where you would wear a belt, as shown below. Stand relaxed, don't suck in or vacuum.

Note: These are meant to fit snug! If in between sizes, round up. Unless you've still got some time left in your prep to lose/cut more weight. 

Size Waist (IN) Waist (CM)
S (Small) 29-31 73.6-78.7
M (Medium) 32-33 81.3-83.8
L (Large) 34-35 86.4-89
XL (Extra-Large) 36-37 91.4-94
XXL (Extra-Extra Large) 38-39 96.5-99


  • All sizes are approximate.
  • Questions about sizing? In-between sizes? We’re here to help you find your best fit!
  • Don’t know your measurements? Get a Tape Measure here.

All American

We're a veteran-owned American company serving the world from upstate New York. Local shipping & local accents (NY slang with a southern twang). We'll take care of you!

Big Boy Sizes

Straightforward sizing in big, American sizes. With us there's no trying to figure out the number of centimeters only to see they don't make a big enough size!

Shipping is on us!

No surprises & no code required with free shipping included on ALL orders anywhere in the continental United States & discounted worldwide shipping rates!