Ask a diesel mechanic what keeps him going and he will not say passion.

It is a cup of coffee he has reheated twice, a bolt that will not break loose, and a word he would not say in front of his mother. That is the job.

This shirt is for the man who was under a truck at six in the morning and is still under it at seven at night. Every mechanic who reads it grins, because to him it is not a joke, it is Tuesday.

• Heavyweight cotton that holds its shape through the wash
• The print goes into the fabric, not a plastic patch that peels off in the third wash
• Sizes S through 5XL, standard US men's cut
• If the print is wrong or the shirt shows up flawed, tell us within 30 days and we replace it free

Size guide (garment laid flat, inches. Between two sizes, take the larger one.)

Care

• Machine wash cold, inside out
• Tumble dry low
• Do not iron directly on the print
• Wash with like colors the first couple of times