*** With the closing of Joann's, the backing to all of the bandanas will gradually be changing. I will try my best to keep the backings similar to what's listed in the photos and will update pictures as they're made with the new backing. If you are iffy on what a the back of a bandana might be, please reach out! thanks so much for understanding during this time of change! *** All bandanas are handmade by myself for your pet! All bandanas are made of 100% cotton and are machine washable! This is a snap on bandana but if you'd like to tie before you snap I'd suggest sizing up. Please also consider the fluff of your pet when choosing a size. If a collar snuggly fits your dog at 17", I would suggest size Medium instead of Small because 17" is as far as the Small will go and you'll want a little wiggle room.  Sizes: XS - up to 13" S - up to 17" M - up to 21" L - up to 25" if bandanas are a little too big: take the two ends of the bandana and loop them before snapping. that should help!