A 3" x 5" muslin drawstring bag stuffed full of 100% catnip, this is "gourmet" catnip...much better than what you find in pet stores. If your cat has claws, or you think they may tear the muslin material, you can put this catnip bag inside a tennis sock and tie it closed. They'll still love it and you won't be cleaning up catnip all over the living room floor!