My 5yr son wants spiderman pj's - but they have to be the ones that look like spidermans costume?

He has a pair already which are now ripped at the knee but he refuses to throw them out! I've looked verywhere but all I can find are the merchandised versions which have pictures of spiderman on them rather than looking like an actual costume. We got the existing pj's in Asda but they no longer sell them :(