I was a little skeptical about a slide-on ID tag before the purchase of a couple of these incredible CNATTAGs. Thought it would irritate my puppies' skin/fur and that they would loose them soon. CNATTAGS sit perfectly tight on the collar. My puppies do not notice them at all! Their previous hanging tags, bestsellers:), were making constant noise. These durable stainless steel tags have easy to read engravings; they are $4.95 each! These slide-on ID tags are just what our puppies deserve - the best! Thank you for that!