wearable sleeping bag

A type of sleeping bag that, as the name suggests, can be worn like a clothing item and allows the wearer to walk around due to the leg protrusion.

Originally, it was a meme attire in the Japanese community due to a magazine ad featuring a man wearing the sleeping bag while walking in a peculiar pose. In later times, however, it is often mistaken as a reference to the Crewmate from Among Us due to their strikingly similar appearance, especially with the wearer appearing as if they have no arms.

Examples

The original ad

Touhou's Houraisan Kaguya wearing the sleeping bag. This image and a derivative of it are often associated with the phrase "haters gonna hate".

This tag implicates sleeping_bag (learn more).