Lightspeed Briefs are comfortable underwear that cost around $30 for a pack of three. They were advertised in Fry's dreams which made him want a pair, but he couldn't afford them.
Advertisments for Lightspeed Briefs can be seen on buses in "Proposition Infinity" and "Stench and Stenchibility".
- A palette-swapped pair of the briefs (presumably belonging to Zapp Brannigan) can be seen in "War Is the H-Word".
- A pair of Lightspeed Briefs came with the Fry action figure made by Moore. However it did not reappear in the Toynami versions (the current line).