Common materials shown include polyester and faux fur for soft sleep surfaces, linen on some sofa-style beds, MDF (for larger cat tree structures), and micro-plush or plush coverings on several beds.
Listings target a range from small through medium and some designs labeled for all sizes. Several items are listed as small (0–25 lb) or medium (26–50 lb), while others are presented as suitable for all sizes or multi-cat households.
Most listings specify indoor use; materials and care instructions are generally oriented toward indoor environments.
Some listings highlight orthopedic or high‑elastic fillings and padded bottoms designed to distribute pressure and relieve joint fatigue, making them especially suitable for senior pets or those with sensitive joints.
Fill materials include synthetic fibers, polyester fiber fill, and foam; some engineered structures or tunnels have no fill.
