That's a recuperacoon, and the stuff in it is the sopor slime. Not all of them are purple or that design, but that's the basic idea. Normally we're nocturnal, but obviously I'm not a normal case.
[The view jolts around as he turns his SFC back to his face.]
Like I said, I doubt it would work for you. I already know you don't use anything like this to sleep on.
[VIDEO]
[The video cuts out briefly. When it returns, the view doesn't show Karkat, but a purple pod full of bright green goo.]
That's a recuperacoon, and the stuff in it is the sopor slime. Not all of them are purple or that design, but that's the basic idea. Normally we're nocturnal, but obviously I'm not a normal case.
[The view jolts around as he turns his SFC back to his face.]
Like I said, I doubt it would work for you. I already know you don't use anything like this to sleep on.