integer400

https://integer400.com

[integer400]

ALLOW 0x400 L/S Tee

Allow, Deny, Allow, Deny, Allow. A calm signal through the noise — Allow 0x400.

0x400 reflects a hacking-inspired aesthetic from 400, not an actual firewall rule.

[integer400]

Why Your Order Might Fail Without This Input

A valid phone number may be required during checkout depending on your region.

See FAQ for details.

[integer400]

SQL-Inspired Error Tee

Every time I try XSS and get a SQL syntax error, I’m convinced the site is vulnerable to SQL injection—even if I can’t prove it.

Inspired by a real SQL syntax error, not an actual error message.

[integer400]

Binary State Oversized Tee

0101 400 1010 Wait… 400 in binary? That’s illegal. Oops—it’s just an integer sneaking in.

Inspired by the world of 0s and 1s — a fictional code-inspired design.

[integer400]

Pipeline Syntax–Inspired Tee

Convert 400 to an integer, then pipe it through tee.

Inspired by functional programming.

[integer400]

New Logo

Late announcement — on July 3, 2026, we updated the integer400 logotype.

The new version uses a monospaced slab serif typeface, replacing the previous modulated sans-serif.

This change improves how symbols render and aligns better with the hacking / coding language behind our products.

[integer400]

Dot Dot Slash Hoodie

../../../../ may look meaningless to many people, but it carries a familiar meaning for those who understand file paths and system navigation.

A minimal design inspired by the hidden meaning behind computer symbols.

[integer400]

Integer Overflow Inspired Tee

integer overflow at 400 — when a number exceeds what a system can handle. A tiny bug, a big failure.

Inspired by real programming concepts — a fictional code-inspired design, not an actual error message.

[integer400]

New Store — New Concept

Our previous store on Shopify has been unavailable since the end of June 2026, so we’ve made the move to Storenvy — marking the beginning of a new chapter for us.

With this transition comes a refreshed concept. You’ll start to see new design directions, including variations of the same design across different shirt colors, allowing for a more versatile and expressive look.

We’re also expanding beyond shirts. Expect to find additional pieces, including hats and other items that complement our core aesthetic.

This is just the start — more updates and releases will follow.

Explore the new store here: https://integer400.storenvy.com/