About this item - Spacious & Sturdy: 17.6" x 13.2" x 11.4" interior with reinforced steel frame. Extra height lets cats and small dogs (up to 18 lbs) sit or stand naturally. Perfect for Chihuahuas, Yorkies, French Bulldogs. - Maximum Airflow: Four-sided breathable mesh panels and multiple entrances ensure optimal air circulation. Top mesh window opens for your pet to stick their head out; built-in roller blind provides privacy and sun protection. - Foldable & Airline Approved: Collapses flat for easy storage. Streamlined dimensions fit under most airplane seats. Always check with your airline for specific size requirements. - Safety First: Internal safety leash prevents escapes when top is open. Heavy-duty 600D water-repellent Oxford fabric and high-density claw-proof mesh keep your pet secure. - Comfort for All: Sherpa-lined pad for pet comfort. Breathable back panel, memory foam shoulder straps, adjustable chest/waist buckles reduce strain. Multiple side pockets for water, treats, waste bags.