Perfect for Pets: The hay feeder bag is specially designed for small pets that eat hay, such as rabbits, guinea pigs, and hamsters. Please measure your cage and choose the right product. Frugal and Clean: convenient hook and loop fastener prevents small animals from entering the bag to pull the hay and avoid waste. Easy to Install: There are two hooks, which can quickly and stably hang the hay bales on the pet cage, which is convenient for pets to eat. Window Design: 2 or 4 holes, which can be purchased according to demand, windows can keep pets in order when eating, and keep the pet cage clean, reducing waste. Sturdy Material: made of 600D Oxford cloth, reinforced window edges, durable. Waterproof design.