Small: Chest: 76-95cm (≈29-37 inches) Bicep: 23-26cm (≈9-10 inches) (non-flexed)
Medium: Chest: 76-98cm (≈29-39 inches) Bicep: 25-29cm (≈9-11 inches) (non-flexed)
Large: Chest: 76-110cm (≈29-43 inches) Bicep: 30-35cm (≈11-14 inches) (non-flexed)
X-Large: Chest: 90-130cm (≈35-51 inches) Bicep: 35-42cm (≈14-16 inches) (non-flexed)