1. Design: The climbing frame for tree stump cats has a very simple structure. The interior is divided into two levels, each level containing a litter box with a yellow cloth. Additionally, nests are arranged inside. On one side of the cat climbing frame, there is a scratching post made of sisal material. 2. Material: Most of the area is made of cashmere fabric, which is breathable, warm, and does not shed hair easily. A small portion consists of a sisal mat, which is wearresistant and scratchproof. The soft pad is a cotton pad that is warm and elastic. The inner core is a thickened cardboard tube. 3. Stability: The base is sturdy, using the thickened cardboard tube, which has a loadbearing capacity. The cat climbing frame is not easily collapsible when the cat is playing. 4. Function: Twotiered litter box and upper level, suitable for 1 to 3 cats to play and rest. The sisal board on the side provides a scratching surface for the cat, protecting furniture from scratches.