The crochet stitch used did involve crocheting in back loops only, which created the ridged effect and also seems to have made it stretchier somehow, which possibly helps explain why the simple shape works. It's a free pattern though I think you have to sign up to the Lion Brand website to get it (here)
![[personal profile]](https://www.dreamwidth.org/img/silk/identity/user.png){kind=small}
no subject
no subject