Muscle Tank Top Size fit True to size. Model is 5'8" and is wearing size S. Flat Lay Measurements XS Bust 30" Waist 30" HPS Length 19.5" S Bust 32" Waist 32" HPS Length 20" M Bust 34" Waist 34" HPS Length 20.5" L Bust 36" Waist 36" HPS Length 21" XL Bust 38" Waist 38" HPS Length 21.5" Garment care Hand Wash - Dry Flat - Cool Iron Materials fabrication Sleeveless Tank Top Round Neckline Low Armhole Curve Hemline Composition 95% Cotton 5% Spandex Baby Rib 1x1 Tonitte Tank Top