| Shirt | ShoulderSeam to Shoulder Seam | ShoulderSeam to BottomHem | MidWaistWidth |
| Rocktopus Regular S | 18 | 25 | 18 |
| Rocktopus Regular M | 19 | 27 | 19 |
| Rocktopus Regular L | 21 | 28 | 22 |
| Rocktopus Regular XL | 23 | 29 | 24 |
| Rocktopus Regular XXL | 25 | 30 | 26 |
| Rocktopus BabyDoll S | 13.5 | 22 | 14 |
| Rocktopus BabyDoll M | 14 | 23 | 15 |
| Rocktopus BabyDoll L | 14.5 | 24 | 16 |
| Rocktopus BabyDoll XL | 15 | 25 | 17 |
| Rocktopus BabyDoll XXL | 15.5 | 26 | 18 |