SPACIOUS & STABLE FOR ALL DOGS – This backseat extender for dogs (61’’ long, 24.8’’ wide, and 21.7’’ high) feature a hard bottom that expands space by 40%, supports up to 400 lbs, and includes firm inserts for a large stable base—ideal for multiple large dogs or older, anxious pups. Plus, this version features a new, expansive storage pouch on the back of the driver’s seat for maximum storage. COMPATIBLE WITH THE FOLLOWING VEHICLES: Compatible with Chevy Suburban, Silverado 1500 Crew Cab, 1500 Double Cab, 2500 Crew Cab, and 2500 Double Cab. Ford Explorer, Expedition, F150 SuperCrew, F250 SuperCab, F250 SuperCrew, and F350 SuperCrew. GMC Sierra 3500 Crew Cab, and Double Cab. Nissan Titan Crew Cab and King Cab. Ram 1500 Crew Cab, 1500 Quad Cab, 2500 Crew Cab. Toyota Tundra CrewMax and Double Cab, and other Large Full-Size SUVs. NOT FOR OTHER MODELS - Large is suited only for Full-Size Trucks and Large Full-Size SUVs only. If your vehicle isn’t listed above, this Large Seat Extender will not fit. Will not work with captain's chairs or rear-hinged, backward-opening truck doors. Does not work in 3rd row. Will not work with Ford SuperCab, Nissan KingCab, or other rear-hinged, backward-opening truck doors. For cars, mid-size SUVs, and mid-size trucks, select the medium size to ensure the proper fit. EXTENDS TRUCK BACK SEATS – This rigid, quilted backseat dog cover and extender turns your full-size truck’s back seat into one continuous platform. Unfold the cover, secure the anchor straps, fasten each headrest strap, and attach the door panel protection using the plastic window inserts secured with velcro. In about a minute you have a level, non-slip liner that keeps big dogs relaxed and upholstery free of claw marks. PROTECTED DOOR PANELS  – Shield doors easily with our extended dog seat cover for back seat with patented door panel protection (U.S. Patent No. 12,221,024) that velcros to window inserts that slide into the window seal. Blocking scratches, drool, and muddy paw prints mile after mile. EASY CLEAN & WATERPROOF  – Triple‑layer back seat cover for dogs repels water, mud, and fur across the backseat interiors. Wipe clean on the go, or machine‑wash on gentle for heavy messes and hang‑dry to keep your back seat fresh and spotless. Comes with a heavy-duty waterproof travel bag for tidy, grab-and-go storage. EASY INSTALL & SECURE DESIGN – Transport your pet safely with this pet seat cover for back seat with built-in anchors, seat belt zippers compatible with child seat anchors (LATCH), a non-slip underside, and a giant zippable mesh that allows for maximum airflow. Perfect for full-size trucks, it keeps pets steady in transit while you focus on the drive. Elevate trips with this dog car seat cover for back seat that acts as a dog seat cover for back seat & a back seat pet cover for dogs. Designed as a backseat cover for dogs in car rides, it also functions as a dog car seat cover for daily commutes. Convert it into a dog hammock for car or trust these car seat covers for dogs to contain fur. This car dog cover back seat delivers broad coverage, making dog covers for cars back seat act like a dog bed for car outings. Each dog back seat cover merges with a seat cover for dogs in car layout, featuring a back seat extender for dogs that forms a hard bottom car seat cover for dogs to prevent sagging. Use a back seat cover for dogs or a pet seat cover for back seat to shield any dog car interior. Turn it into a dog car hammock or a backseat dog cover that works as a dog bed for car back seat getaways. Among dog car accessories, these pet car seat covers backseat has a backseat extender for dogs approach, so you get a back seat dog cover for car setup or a car hammock for dogs back seat lounge. This dog back seat cover hard bottom serves as a pet car seat cover for security. The hard bottom dog seat cover exceeds typical dog seat covers, & the car pet seat cover back seat design fits most vehicles. Need a dog car cover for back seat or a dog cover for car seating? It also acts as a truck back seat cover for dogs. The seat cover for dogs concept extends to a backseat dog cover hard bottom for support. Make it a dog hammock for truck or enjoy these car accessories for dogs anywhere. With a dog backseat extender hard bottom, it’s a seat extender for dogs plus a pet cover for car backseat for easy cleanup. Craft a car dog hammock or a car seat cover dog solution—maybe a dog car hammock for back seat trip. For bigger SUVs, see dog seat covers for SUV or try pet seat covers for trucks for full coverage. A truck seat cover for dogs or a car backseat dog cover suit hauling needs. So, get a back seat extender for dogs hard bottom now.