【FOR SMALL PETS UNDER 15 LBS】 Designed with 18x11x11 Inches, specifically for cats and small dogs weighing under 15 lbs. Please measure your pet’s length and height before purchase to ensure a proper fit 【MEASURE YOUR PET BEFORE BUYING】 Please measure your pet while seated: height from floor to head and length from neck to tail. This bag is for pets under 15" long and 11" tall. Not suitable for larger pets 【AIRLINE COMPLIANT BUT VERIFY】 Designed to meet American, Delta, and United Airlines soft-sided underseat size requirements (18x11x11 inches). Soft-sided construction compresses slightly to fit under seats. Always check your airline’s pet policy 72 hours before flight 【STURDY SUPPORTIVE DESIGN】 Features a reinforced steel frame and durable 600D Oxford fabric for structure and safety. The soft-sided design is required by airlines for underseat storage and provides comfort for your pet 【DISCLAIMER - PLEASE READ】 Airline approval is not guaranteed as policies vary by airline and aircraft. Dimensions may compress slightly when under seats. Recommended for pets under 15 lbs only. Not for use as a standalone crate GAPZER Cat Carrier American, United, Delta Airline Approved / Soft-Sided Pet Travel Bag for Medium Cat 15+ lbs Small Dog Traveling Crate Under 15 Pounds TSA Approved Carrying Cage Underseat Cabin Gray 18 x 11 x 11 inch