If you’ve ever spent all night debugging, this tee was made for you. Featuring the cheeky “Error 404 Sleep Not Found” punchline over a dark circuit-board motif, it’s the perfect conversation starter at hackathons, stand-ups, or your next coffee run. This t-shirt is everything you’ve dreamed of and more. It feels soft and lightweight, with the right amount of stretch. It’s comfortable and flattering for all.

Whether you’re shopping for a software engineer, developer friend, or treating yourself after shipping that big feature, this shirt delivers comfort, humor, and style in one.

• 100% combed and ring-spun cotton (Heather colors contain polyester)
• Fabric weight: 4.2 oz./yd² (142 g/m²) — soft but substantial
• Pre-shrunk fabric keeps the print centered wash after wash
• Side-seamed construction for a tailored fit
• Shoulder-to-shoulder taping for added durability
• Blank product sourced from Nicaragua, Mexico, Honduras, or the US

This product is made especially for you as soon as you place an order, which is why it takes us a bit longer to deliver it to you. Making products on demand instead of in bulk helps reduce overproduction, so thank you for making thoughtful purchasing decisions!