Getting a big or senior dog in and out of a tall trunk can be a real struggle, and this extra-wide four-step stair is built to make it easier. The heavy-duty metal frame supports dogs up to 200 pounds without wobbling, and three adjustable height settings let you match the stair to your car trunk, SUV, truck bed, or a tall bed or sofa at home. Wide steps are wrapped in soft felt carpeting that cushions paws and adds secure traction, while foam-padded handles and a safety tether give you a confident grip and keep your dog steady while climbing. When you're done, the whole stair folds flat and light at 11.9 pounds, so it stores easily in a trunk, closet corner, or side door compartment between trips. It's a practical option for travel, vet visits, or simply helping a mobility-limited dog move safely around the house.