New product In order to fit the under-seat dimensions of airlines, this carrier can only fit small dogs and cats. We recommend that the pet size you carry be within 15"L x 10"W x 10"H(this is carriers inner size), please reference your pet's length and height. Reference pet weight: dog weight under 10LBS and cat weight under 12LBS. Unfolded size:18"L×(13+5.5)"W×(9.5+3.5)"H, Petskd pet carrier is TSA approved and can be placed under the seat in the cabin. Petskd pet carrier has mesh ventilation on 5 sides for good ventilation and good viewing—perfect for your pet to look out and for you to check on your pet; the dog carrier has 3 openings, and each opening has two non-slip zippers to ensure pet safety. 【SAFE DESIGN】Soft dog travel carrier bag upgraded structural design of stainless steel and Fiber rod that ensures our dog carrier bags for small dogs will not be out of shape or sagged and the top does not collapse. Built-in adjustable rope buckle, easy to lock the collar. Zipped snap lock to avoid pets to open or grab open the zipper. Made of waterproof, non-toxic, scratch-resistant polyester fabric material, waterproof and wear-resistant. By unfolding the 2 expansion areas, pets can gain an additional 80% of space to move around. The top expansion is great for your pet to sit or stand. The side expansion area allows your cat to lie down and stretch out on the go.