Build a sky-high indoor playground for active cats with this 56 in cat tree that combines two platforms, a swinging hammock, and a cozy ground-level condo. Skin-friendly faux fleece covers the structure for soft napping while sisal-rope scratching posts redirect claw energy away from sofas and curtain panels. E1 grade 0.6 in Mdf construction holds steady through enthusiastic climbs and big leaps.