The Vevor dog car seat cover back seat extender creates a larger, more stable riding area for dogs while helping protect your vehicle interior. Its hard bottom design supports up to 400 lbs and uses multi-layer waterproof, scratch-resistant materials for daily durability. A breathable mesh panel helps keep pets comfortable, while the included safety belt adds security during travel. The removable side panels and storage pockets make it flexible and convenient for cars, SUVs, and trucks.