Many cat caves rely on soft, heat-trapping surfaces (for example, faux rabbit fur or faux shearling) and a semi-enclosed shape that holds a cat's body heat. Some models use marketed "self-warming" linings to reflect heat back to the pet while the semi-enclosed design helps retain warmth without causing overheating.
Care varies by product—check the label. Common instructions include: machine wash on gentle/delicate cycles (many are labeled machine washable), spot-clean or hand-wash and air-dry for beds that advise gentler care, and removable, machine-washable covers on some pads for easier cleaning.
Most listings target small pets. Several products are labeled for Small breeds (0–25 lbs), and one semi-enclosed model specifically lists a 21" x 17" interior suitable for cats and small dogs up to about 15 lbs.
Common styles include semi-enclosed sleeping-bag or cave shapes with wide entrances, fully enclosed "egg" or igloo nests, high-walled bolsters or cuddler designs, tunnels, and multi-level condos or perches. Some designs are stackable or include perches.
Typical fill materials include cotton, PP cotton, and polyester. Many beds also use polyurethane foam or supportive foam layers; some models specifically mention an orthopedic bottom or added foam support for structure and comfort.
Several listings promote multi-use designs (for example, 4-in-1 bed, mat, and cave configurations), lightweight construction for moving between rooms or taking on trips, foldable or no-assembly designs for storage, and models meant to work in living rooms, bedrooms, or cars.