<b>Size Guide:</b><br> XS (Extra Small) approx. 16 weeks to 5 months of age or up to about 5.5 pounds cats.<br><br> S (Small) approx. 5.5-11 pounds.<br>Small-boned adult cats wear small.<br><br> M (Medium) approx. 11-16 pounds.<br> Most adult average size cats wear medium.<br><br> L (Large) approx. 16.5 pounds and up.<br> Large-boned cats wear large.<br><br> <b>Application Steps:</b><br> 1. Correct size is important. Take one of the nail caps out and try it on your cat's claws without the glue to ensure a proper snug fit. it should fit like a sock.<br><br> 2. Trim cat claws to the same length with that of the nail caps. If the nail cap is too large, you may trim the open end of the nail cap until it fits. Note: Do not trim kittens claws before applying nail caps. You will need a sufficient claw surface for the glue to adhere properly.<br><br> 3. Fill the nail cap with about 1/3 adhesive, never fill to too full to prevent overflow of the adhesive. Wait the adhesive is half-dried in the nail cap. Please be careful and avoid dropping glue on your hands or your cat's fur, if you do, remove it with use nail varnish remover or dispergator.<br><br> 4. Grasp claws of the cats, slightly push aside the hair on the nails and expose all of them. Put the nail caps onto the claw and make sure they are completely wrapped. Wait until the adhesive is dry and continue with the next one.<br><br> 5. After all caps are applied, observe the cat for at least five minutes to make sure nail caps are secure. A good tip is to feed your cat his or her favorite food immediately after applying all nail caps.<br>