MULTI-SCENE USAGE - EHEYCIGA foam dog stair is designed to fit against the edge of a bed, sofa, or other furniture, allowing your pet to climb up and down comfortably. It's a portable dog step suitable for small and medium dogs. MULTIPLE STEP SIZES - This dog stair comes in 3, 4, and 5-step options. Our 3-step pet stair is ideal for sofas and low beds (up to 18 inches high), while the 5-step version is better suited for higher beds (up to 27 inches). If your bed is of medium height (up to 23 inches), please select the 4-step one. STEADY & FOLDABE: With a 30D high density foam and eco-friendly support board, this dog stair offers enhanced stability.