Snoozer's Roll Around Pet Carrier is for the GO-EVERYWHERE PET. It's a backpack. It's a rolling carrier. It's a carry-on. It's a car seat. It's the Swiss Army Knife of pet carriers! Our sturdy 4-in-1 Roll Around easily and simply converts from one type of pet carrier to the other for maximum versatility and convenience. Designed to take small dogs, cats, and other pets up to 30 pounds with you on planes, trains, automobiles, subways, and more, it's simply one of the best pet carriers around! Note: Before flying, always check with your airline to ensure your pet carrier meets the airline's travel requirements. This is especially important for the Large size, but please compare both sizes to your intended airline's requirements before purchasing! Medium: 13"w X 20"h X 10"d (up to 15lbs). Large: 15"w X 22"h X 13"d (up to 30 lbs). MADE FOR DAILY LIFE, TOO. Besides being perfect for travel, the Roll Around is also great for keeping pets safe on the way to the vet, while you're running errands, hiking tough trails, walking in high-traffic areas, dining outdoors, and so on. Once you have the Roll Around, you'll find so many uses for it that you'll never want to leave your pet at home again! MORE TRAVEL, LESS STRESS. Travel can be stressful for our cats and dogs, but our Roll Around carrier can help reduce anxiety. With strong yet lightweight mesh on three sides and a front flap that can be rolled down, your pet can see what's going on while still feeling snug and secure in the padded and comfy carrier. So, you can enjoy your travels more with a calmer, happier dog. One Year Manufacturer Warranty for Defects.