AIRLINE APPROVED CARRIER 】Unfolded size:17"L×12"W×(8.5+3.5)"H, Petskd pet carrier is TSA approved and can be placed under the seat in the cabin(after remove the wheel base), it is mainly designed for ①JetBlue Airlines②Spirit Airlines③Frontier Airlines, but also in compliance with ④Allegiant Airlines⑤Southwest Airlines⑥Air Canada. We recommend you buy this carrier when you fly with the above-mentioned airlines. We recommend that the pet size you carry be within 15"L x 10"W x 9.5"H and weight under 10LBS. Please don't choose the carrier only based on weight but also reference your pet's length and height. stainless steel and Fiber rod waterproof, non-toxic, scratch-resistant polyester fabric material, waterproof and wear-resistant; Questions? Leave a comment below!