1. Elastic Foam The density 30D foam inside provides ample support while being soft enough for pets to climb around comfortably. The climbing ladder is suitable for short legged dogs, cats, or small dogs. 2. Machine Washable Corduroy Cover The pet stairs feature a zippered cover, allowing you to easily remove it for cleaning. Made of corduroy material, the cover is resistant to pilling. 3. Ramp Stairs Size: 40*39*31 cm/15.8*15.4*12.2 inches; 40*55*35 cm/15.8*21.6*13.8 inches; 40*71*46 cm/15.8*27.9*18.1 inches. Ramp style stairs are more pet friendly than step style stairs, making it easier and safer for senior pets with limited mobility or arthritis to climb up and down. 4. Non Slip Stability Ladder The silicone paw prints on the bottom of the foam pet ladder ensure anti slip performance. Corduroy offers better friction resistance than other covers, reducing the risk of slipping and falling when your pet steps on it.