The Aspen Pet Pet Porter 32 Travel Dog Kennel Portable Medium Pet Carrier for Dogs 30-50 lb Gray - keeps pets safe and secure for travel and transport while giving pet owners peace of mind. Pets can travel comfortably in the kennel with plenty of air and visibility via the ventilation openings. The pet porter s simple metal hardware allows easy assembly. The travel kennel has additional features that are offered depending on size featuring carrying handles back vents compartment covers and side latches for the smaller sizes and secure tie-down holes for the larger sizes.