Product details: Name: Little Monster Pet Carrier Backpack Material: Food PC + Oxford Cloth Backpack Weight: About 1.3KG Maximum Loading Weight: Cats within 6.5 kg, Dogs within 5 kg Backpack Size: 32 29 42CM Transparent Cover Material: Acrylic Transparent Cover Size: Diameter 17CM Features Lightweight material brings a relaxed, comfortable feeling High-strength Decompression Seismic Design Built-in Anti-escape Lock The lock uses with collars to prevent the pet from running out of place when the bag is opened.