TrustyPup 2-In-1 Grey Backpack, Medium Carrier is a Guaranteed On-Board airline travel pet carrier and is compliant with most airline's specific rules and regulations allowing pet parents to travel with peace of mind. The convenience of this product being a backpack AND Carrier is phenomenal! You can use it on a plane or taking your pet out to brunch, bike rides, hikes, etc. The possibilities are endless! Designed for smaller cats and dogs, the, size of carrier is 18" long x 11" wide x 10. 5" high. There is a handy 7"x5" side pocket to put your leash, treats or waste bags in! TrustyPup gives pet parents the best of all worlds: innovative products, stylish designs, environmental responsibility, and exceptional value with a variety of toys, beds and travel products to meet a cat or dog's needs for play, exploration, retreat, rest, and fun! Please check with the airlines under seat measurements to ensure our backpack will fit. Guaranteed-On-Board allows you to fly with peace of mind by ensuring your TrustyPup pet carrier is compliant with participating airlines’ rules and regulations. Please note, sizing requirements vary by airline. Be sure to check with your airline prior to booking. Accurately complete the online form, print it, and present it at check-in. If you are denied boarding due to your TrustyPup pet carrier, Worldwise will refund the cost of your ticket and pet fee – guaranteed! HOW TO MEASURE YOUR PET TO ENSURE FIT: For pet’s length, start at the front of the chest and measure to the end of the pet's rear. For height, measure from the floor to the top of the back while pet is standing. Round up to the nearest inch or pound. DO NOT EXCEED MAXIMUM WEIGHT AND MEASUREMENT LIMITS. Care Instructions: Remove the stability board, and the liner. To clean the backpack, spot clean with mild soap or cleanser and air dry. To clean the liner, machine wash in cold water, gentle cycle. Air dry. Spot-clean the stability board with soapy water or a pet odor cleaner. DO NOT SUBMERGE THE STABILITY BOARD IN WATER. Warnings: Hot cars are dangerous for pets. Never leave your pet unattended in a car. For pets only. This carrier is not a kennel or permanent habitat and is intended for pet transport only. It is not intended to be used as a containment device and is not indestructible if a pet tries to escape. Train your pet to be comfortable in the carrier before travel use. . Do not leave pet unattended with/in carrier. When using this carrier in your car, please be sure to secure it to the back seat only. Do not allow pets to chew on the carrier.