Mr. Peanut's Aspen Series Airline Approved Backpack Pet CarrierSoft Sided Backpack Tote for Cats & Small Dogs, Please Check Sizing Before Purchase, Premium Brand Self Locking Zippers & Faux Fleece Padding. Designed for Biking, Travel, Hiking & Fun with Your PetPerfect for travels such as biking, hikes or whenever your hands are not available to carry a tote. Also can be used as an in-cabin under seat airline capable pet carrier * PLEASE NOTE INTERIOR SIZING & PET MEASURING GUIDELINES BEFORE PURCHASE - Tote exterior measures 18"Hx14"Wx9"D, Best Fits Pets approximately to 14"Lx9"H. Airline capable carriers are designed for pets lying down, so your pet may not be able to stand.