Product Dimensions 17"L x 11"W x 9.5"H Target Audience Cat, Rabbit, Dog Material Polyester, Metal Special Feature Airline Approved, Lightweight, Easy to Clean, Easy to Use, Easy to Store 【AIRLINE APPROVED CARRIER 】Unfolded size:17"L×11"W×(9.5+3.5)"H, Petskd pet carrier is TSA approved and can be placed under the seat in the cabin, it is mainly designed for ①Alaska Airlines:17x11x9.5", but also in compliance with ②Southwest Airlines:18.5x13.5x9.5" ③Delta Airlines:18x11x11" ④United Airlines:18x11x11" ⑤American airlines:18x11x11" ⑥Air Canada:21.5x15.5x10.5". We recommend you buy this carrier when you fly with the above-mentioned airlines. 【CHECK SIZE BEFORE BUYING】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 9"W x 10.5"H and weight under 12LBS. Please don't choose the carrier only based on weight but also reference your pet's length and height. Pet travel