UNICITII Car Seat Extender for Large Dogs – 120 lb Capacity & Back Seat Organizer

Expand travel space with your large canine companion

The UNICITII Car Seat Extender reimagines how you share the car with a big dog. Built to support up to 120 lbs, this extender creates a roomy area in either the back or front seat, giving your dog space to lie down, stretch, and enjoy the passing scenery as you drive.

Designed for comfort, safety, and real-world use

When your dog lies down, the extender offers support for legs and paws, helping reduce movement during sudden stops or quick turns. The extended platform also encourages a comfortable posture and a broader view of the outside world, which can help some dogs stay calm on longer trips.

• Large footprint for generous space: roughly 19.1" L x 10.4" W x 13" H.
• Versatile placement in back or front seat areas to fit your cabin layout.
• Robust construction designed for dogs up to 120 lbs with a stable ride.

More than a seat extender — smart organization

Equipped with an adjustable divider, the unit can be configured into three or four storage compartments to keep leashes, treats, toys, and travel essentials neatly organized. When not in use, it folds away to help maintain a tidy car interior.

• Three or four storage sections tailor the setup to your needs.
• Folds compactly for easy storage when not in use.
• Also functions as a trunk filler or extra seating support, depending on your trip.

Versatility beyond seating

Beyond supporting a seated dog, the design can serve as a pet stair for getting in and out of the car, a protective barrier during busy drives, or a convenient carrier for gear during transitions between passengers and cargo.

• Pairs as a compact seat storage unit for on-the-go gear.
• Ideal for road trips, daily commutes, and family adventures.

Durable, easy to maintain

Constructed from 600D scratch-resistant Oxford fabric, it resists dirt and wipes clean. A secure lid, two easy-move handles, and a sturdy embedded hollow board provide structure, while a non-slip bottom helps keep the setup stable as you drive.