so sure i thought they were good quality stuff... just as long as nothing gets caught on them... if that is the case then DONT i repeat DONT pull the string... i'd suggest if you are a crafty inventor to sew the edges and make sure you stay away from anythign that can damage them... i had them for a week till they basically caught on a velcro... me and my blonde personality don't really know how to not figure things out... lol so yeah