Glow in the dark! Unique yet functional nail caps for your cat. In daylight they are an attractive green color that your pet will wear with pride, but when given enough light (sunlight being the best,) these nail caps will emit a green glow in the dark for a short time. The are especially striking under black light.Developed by a veterinarian, these vinyl nail caps glue on to your cats nails. This amazing product effectively blunts your cats' nails to protect against problem scratching; protecting against:-  Damage to Household Surfaces: Floors, Doors, Screens, Walls and Furniture-  Protects You from Scratches as wellEach application lasts approximately 4-6 weeks until your cat naturally sheds their nail. The nail caps are extremely safe and non-toxic. Even if your cat swallows one, no harm will come. The nail cap will safely pass through the digestive system. You only need to do the front nails of your cat so this set of 20 caps will last you approx. 2 months.Cats Size Guidelines :Kitten Size: (Less than 6 months old)These will fit most kittens by the time they reach the age of 16 weeks (4 months). Some kittens can wear them as early as age 12 weeks (3 months) . To test, try a nail cap on first without the adhesive. If it looks too big, don't glue it on. The nail cap should fit snugly, like a glove.Small: (Approximately 6 months old -- Approximately 6-8 pounds)Some kittens at 5 months may need the small size if they are growing fast or are large-breed cats.Small-boned adult cats often wear the small size. If your cat seems smaller than an average full-grown cat, choose small.Medium: (Approximately 9-13 pounds)Most adult average size cats wear medium.Large: (Approximately 14 pounds and up)Very large-boned and large-breed cats wear large.Each Set Includes :20 Vinyl Nail Caps1 Tube AdhesiveApplicator TipInstructions