The Pet Gear Bi-Fold Pet Ramp allows your dog easy access into your vehicle or other hard to reach places. The tread is skid-resistant even when wet to keep your pet steady. The bottom of the ramp has rubber grippers to maintain its position. The bi-fold design reduces storage space and has a carry handle for easy transportation. The Pet Gear Bi-Fold Pet Ramp is suitable for pets up to 150 pounds.