FOFOS Recycle plastic bottle toys using the natural catnip grown in North America. It is pollution-free organic cultivation and due to long exposure to sunlight, the catmint has a longer-lasting and rich fragrance. All external materials are made of 100% GRS certificated recycle polyster fiber (RPET) & natural rope. The elasticity & toughness is way stronger than normal fabric. A pocket is provided where you can refill the catmint by yourself. Every toys have a crinkle sound which able to attract your cats to have their fun time. Size : 14x17x4.5cm