Ruff Maxx Portable Dog Kennel STRONG AND DEPENDABLE DESIGN: Petmate's Ruffmaxx medium dog kennel is built with a durable plastic shell that provides strength and security 360-DEGREE VENTILATION: Outside dog kennel is surrounded by ventilation openings, allowing access to fresh air and visibility from all sides EASY AND SECURE ASSEMBLY: Medium dog kennel includes nuts and bolts for quick setup and stress-free assembly OUTDOOR-FRIENDLY COLORS: Ruff camouflage design allows a more inconspicuous look during hunting or outdoors AIRLINE-ADAPTABLE: Portable dog kennel meets most airline cargo specifications for easy and safe travel, but pet owners should always check with individual airlines IDEAL FOR MEDIUM PETS: Medium dog kennel comfortably accommodates pets ranging from 30 to 50 pounds