Built-in plush material, comfortable and warm, soft and durable. It can be easily stored after being folded, and the button can be unfastened, and the cat tunnel can be unfolded naturally without installation, provides a spacious space for small pets to walk through. Ventilation holes are designed to allow cats to freely enter and exit the tunnel. Suitable: Can accommodate guinea pigs, ferrets, mice, hedgehogs, rabbits and other small animals. Take the entertainment with you anywhere, so your pet is never bored! Specification: Material: Cotton Size Chart: Length: 56cm/22.05inch Tunnel Diameter: 25cm/9.84inch Package Includes: 1 Piece Guinea Pig Tunnel Note: Color might be slightly different due to the color calibration of each individual monitor. Please allow slightly measuring deviation due to manual measurement.