Practical question about crawling and trousers...

[tostaky]

well, my lo has been crawling for a few weeks now and holes have started appearing on his trousers...

what do you call that thing you can transfer or stitch on knees (and elbows) and where do you find it?

Thanks!

Patch
Haberdasher's section in department store

I was always tempted to stick wipes to their knees so the floor would be cleaned while DCs crawled around.