Swamp Thing Pajamas (1991)
There’s a Swampy sleeping bag and two kinds of slippers (1,2), of course there’s a pajama set.
The original packaging is pretty simple and I’m not familiar with the manufacturer, PCA Apparel.
The artwork on the shirt is one of my favorites of all the Swamp Thing t-shirts. It would be great if the shirt was reproduced in adult sizes.