COMPACT COMFORT Sleepypod Atom is a modern pet carrier for everyday living. Pet travel is a breeze with Sleepypod Atom carrier. When traveling by air, the ergonomic and sleek design fits comfortably below most airline seats. Car travelers can rest assured because this petite carrier was crash tested at the same rigorous standards used for all Sleepypod carriers. Certified by the Center for Pet Safety for pets less than 12 pounds. Sizing and preferences vary by pet, just like humans. Check Sleepypod's sizing guide for more information. Sleepypod Atom is a compact, multifunctional carrier and crash-tested car seat. A buckle on both sides secures the carrier to the seat belt in the rear seat of the vehicle. Removable and machine-washable Ultra Plush bedding ensures a comfy napping cave or a cozy pet bed away from home. Soft-sided and lightweight with features for the most discriminating pet and owner. Mesh panels on three sides provide ample airflow and visibility for the pet. Slim profile for easy carrying. Durable materials resist tearing and staining. Back Length: 17" Height: 10.5" Pets Weighing: 12lbs. Width: 8.5" Interior 16"L, 8"W, 9.5"H / Folded Flat 17"L, 10.5"W, 2.5"H