SECURE AND ADAPTABLE FOR TRAVEL: Wire vents, secure door, and easily adaptable travel necessities provide a safe and comfortable travel experience EXTRA SECURITY: 4-way vault door provides extra security for the travel dog crate by preventing sliding and shifting DURABLE, HEAVY DUTY CONSTRUCTION: Durable plastic shell, non-corrodible wing-nuts, extra strong steel wire, and interlocking door provide heavy-duty protection 360-DEGREE VENTILATION: Ventilation openings surrounding the travel kennel give pets fresh air and visibility from all sides TRAVEL NECESSITIES INCLUDED: Portable dog kennel includes 2 "Live Animal" stickers, clip-on bowls and ID stickers for easy modification for travel CARRYING HANDLE: Portable kennel includes a top handle for convenient carrying 6 SIZES AVAILABLE: The Petmate Sky Kennel offers 6 sizes from 21" to 48" for all sizes of pets AIRLINE-ADAPTABLE: The Petmate Sky Kennel meets most airline cargo specifications for easy and safe travel, but pet owners should always check with individual airlines.