Watch your kitty toss, flip, kick and enjoy, it's Gigwi silvervine toy. \n \nWe only use top quality utilized Changbai mountains silvervine for GiGwi refillable silvervine toys. These toys have a special fastener, so that fresh silvervine teabags can be added again and again - to last all your cat's nine lives. \n \nSilvervine leave is a part of a natural plant, silvervine, growing in mountainous regions of Asia and having long been known as a cat attractant. It has a strong flavor, making it hard for your cat to resist. \n \nIncluded ziplock bags maintain the maximum freshness and keep your extra silvervine in necessary conditions until needed. \n \n