Our bandanas are 100% cotton and are handmade in Northern California. They are secured with a snap, making it easier to take them on and off, but still durable enough they stay on during play or beach romps. Sizing X-SMALL: Fits necks up to 10" suggested for most cats, yorkies, chihuahuas SMALL: Fits necks up to 12" suggest for most pomeranians, smaller corgis, maltese, mini doodles, havanese MEDIUM: Fits necks up to 17" suggested for most medium doodles, schnauzers, mini aussies, beagles LARGE: Fits necks up to 22" suggested for most golden retrievers, labs, german shepherds, huskies, standard doodles