We know geeky guys and gals are hard on their clothes. That's why we test all of our clothes before we sell them to you! Based upon our own experience, we recommend that you machine wash (not dry clean) our T-shirts inside out using non-chlorine bleach when needed and tumble dry medium heat. If you're one of those who has to iron everything, don't iron the decoration. Since they are made from 100% pre-shrunk cotton, we find that they shrink about 1/2" lengthwise only if you throw them into the dryer.
All measurements are in inches. (International customers multiply inches by 2.5 to derive approx. centimeters.)
| Size | XS | S | M | L | XL | XXL | 3XL | 4XL |
| Chest | 32-34 | 34-36 | 38-40 | 42-44 | 46-48 | 50-52 | 52-54 | 54-56 |
| Back Length | 27 | 28 | 29 | 30 | 31 | 32 | 34 | 34 |
| Sleeve Length | 8 1/8 | 8 1/8 | 8 1/8 | 8 5/8 | 9 1/8 | 9 1/8 | 10 1/8 | 10 1/8 |
| Size | M | L | XL | 2XL | 3XL |
| Chest | 42 | 46 | 50 | 54 | 58 |
| Shirt Length | 29 | 30.5 | 32 | 33 | 34.5 |
| Sleeve Length | 9.25 | 9.75 | 10.25 | 10.75 | 11.75 |
| Size | S | M | L | XL | XXL |
| Chest | NA | 44 | 48 | 52 | 56 |
| Back Length | NA | 27 | 28 | 29 | 30 |
| Sleeve Length | NA | 36 | 37 | 38 | 39 |
| Size | S | M | L | XL | XXL |
| Waist | 29-32 | 33-34 | 35-36 | 37-42 | 43-45 |
| Inseam Pants | 27 | 29 | 31 | 34 | 36 |
| Inseam Boxers | 4 | 4 | 4.5 | 5.5 | 5.875 |
| Size | XS | S | M | L | XL |
| Chest | 28 | 30 | 34 | 36 | 40 |
| Back Length | 18 | 20.5 | 22.5 | 24.5 | 26.5 |
| Size | 6 mos. | 12 mos. | 18 mos. | 24 mos. |
| Body Length | 16 | 17 | 18 | 19 |
| Body Width | 11.5 | 12 | 12.5 | 13.25 |
| Size | M | L | XL | 2XL | 3XL |
| Chest | 45 | 48 | 53 | 56 | N/A |
| Shirt Length | 27.5 | 28 3/4 | 30.5 | 31 3/4 | N/A |
| Sleeve Length | 8 | 10.5 | 10.5 | 10.5 | N/A |
| Size | S | M | L | XL | XXL |
| Chest | 34-36 | 38-40 | 42-44 | 46-48 | 50-52 |
| Back Length | 26 | 27 | 28.5 | 30 | 31 |