!False – Boolean Logic T-Shirt
!False – Boolean Logic T-Shirt
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A little logic. A very specific sense of humor.
The “!False” graphic plays with Boolean logic for people who read the exclamation mark as an operator. A coding tee for developers, computer science students and friends who appreciate a joke that needs no debugging.
Size and fit
Unisex sizes S–3XL. Choose from the colors and sizes shown above. Compare our size guide with a shirt you already own; the measurements describe the garment, not your body.
Printed to order
Your shirt is printed after you order. Production is additional to carrier transit time. Available shipping options and charges appear at checkout.
Need help?
Contact us about sizing, delivery, damage or a print issue. Please read our returns and resolution policy before ordering. Care instructions are below.
- Unisex sizing
- Made to order
- Customer support
Care instructions
Care instructions
Wash inside out in cold water on a gentle cycle. Avoid bleach and fabric softener. Air dry or tumble dry on low heat. Do not iron directly on the print or dry clean.
Shipping & Returns
Shipping & Returns
Printed after you order. Production time is additional to carrier transit time. Shipping options and charges appear at checkout.
We do not request physical returns: you keep the item. If it arrives damaged or the size is wrong, contact us for a free resolution. See our returns and resolution policy for details and contact us before taking any action.
Size Table
Gildan 64000 unisex T-shirt
Compare with a T-shirt you own, laid flat. These are shirt measurements, not body measurements.
| Size | Width (in) | Length (in) |
|---|---|---|
| S | 18 | 28 |
| M | 20 | 29 |
| L | 22 | 30 |
| XL | 24 | 31 |
| 2XL | 26 | 32 |
| 3XL | 28 | 33 |
How to measure
Lay your shirt flat without stretching. Measure width from side to side below the sleeves, and length from the top of the shoulder to the bottom hem. Width is not chest circumference.
View measurements in centimeters
| Size | Width (cm) | Length (cm) |
|---|---|---|
| S | 45.7 | 71.1 |
| M | 50.8 | 73.7 |
| L | 55.9 | 76.2 |
| XL | 61.0 | 78.7 |
| 2XL | 66.0 | 81.3 |
| 3XL | 71.1 | 83.8 |
Measurements are approximate. Printify lists a size tolerance of up to 1.5 inches (3.8 cm). Only sizes available on the product page can be ordered.
Need help choosing? Contact us before ordering.