O'Neill Size Chart
Body measurements in Inches
Men's
| Size | S | M | L | XL | XXL |
| Height | 5'6" - 5'8" | 5'8" - 5'10" | 5'10" - 6' | 6'2" - 6'4" | 6'4" - 6'6" |
| Chest | 37" - 40" | 39" - 42" | 41" - 44" | 43" - 46" | 45" - 48" |
| Waist | 30" - 32" | 32" - 34" | 34" - 36" | 36" - 38" | 38" - 40" |
| Hips | 36" - 38" | 38" - 40" | 40" - 42" | 42" - 44" | 44" - 46" |
| Inseam | 30" | 30.5" | 31" | 31.5" | 32" |
Women's
| Size | XS (0-2) | S (4-6) | M (8-10) | L (11/12) | XL (12/13) |
| Height | 5'2" - 5'4" | 5'4" - 5'6" | 5'6" - 5'8" | 5'8" - 5'10" | 5'10" - 6' |
| Chest | 31.5" - 33" | 33" - 34.5" | 34.5" - 36" | 36" - 37.5" | 37.5" - 39" |
| Waist | 23.5" - 25" | 25" - 26" | 26" - 28" | 28" - 30" | 30" - 31.5" |
| Hips | 33" - 34.5" | 34.5" - 36" | 36" - 37.5" | 37.5" - 39" | 39" - 41" |
| Inseam | 29.5" | 30" | 31" | 31.5" | 32" |