This 4 step dog staircase is made of high quality corduroy fabric with a non-slip surface to ensure your dog's safety and peace of mind when walking on it. The interior is filled with high quality sponge to provide a soft and comfortable touch, reduce pressure on your dog's paws and legs, and protect your dog's joints. Each step is designed with enough space, perfect for puppies, dogs with short legs, injured dogs with limited mobility and elderly dogs, help them climb up the bed or sofa easily, reduce the physical burden caused by jumping, and bring a better experience for your dog.It can also be disassembled and combined into other stair forms for greater convenience.