1. 20 PCS Silicone Soft Cat Nail Caps / Cat Paw Claw / Pet Nail Protector/Cat Nail Cover, Size: XS(Gray) The product is shipped based on the color or size of the main image of the product page. 2. Size - XS - Kitten: (less than 6 months old, about 5 pounds / 2.5 kg) Soft Cat Nail Caps may fit most kittens by the time they reach the age of 16 weeks (4 months). Some kittens might be able to wear them as early as age 12 weeks (3 months). To test, one can try a nail cap on first without the adhesive. If it appears too big, it should not be glued on. The nail cap should fit snugly, like a glove. To fit younger kittens, one can trim the base of the nail cap to make it smaller so that it will fit the kitten's nail. Kittens up to about 5 pounds / 2.5kg and/or 5 months generally fit the kitten size. - S - Small: (approximately 6 months old - approximately 6 - 8 pounds, 2.5 - 4 kg) 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 a cat seems smaller than an average full - grown cat, the small size can be chosen. - M - Medium: (approximately 9 - 13 pounds, 4 - 6 kg) Most adult average - size cats wear the medium size. - L - Large: (approximately 14 pounds, 6kg and up) Very large - boned and large - breed cats may wear the large size. Maine Coons, for example, are very large cats and generally wear the large size. 3. Packing: OPP BAG 20 pcs/lot = 1 bag Nail Caps