Men's Training Suits Sizing:

MP Michael Phelps - Men's Training Suits - Size Chart
WAIST (A) 28-29 in 29-30 in 30-31 in 31-32 in 32-33 in 33-34 in
HIPS (B) 33-34 in 34-36 in 36-38 in 38-39 in 39-40 in 40-41 in
RECOMMENDED SIZE: 24 26 28 30 32 34

NOTE: THIS CHART IS INTENDED TO BE USED AS A GENERAL SIZING GUIDELINE.
We recommend that performance suits should always be first tried on by each individual swimmer to ensure proper fit.