mY OLDEST IS 18 YEARS OLD AND HAS SOME ARTRITIS IN HER HIPS WE LET HER HAVE A SQUARE OF THICK BATTING AND SHE LIKES THAT TO KEEP WARM. THEY HAVE A SIMILAR PRODUCT AT THE PET STORE THAT WARM THEM BY THEIR BODY HEAT. LOOKED LIKE BATTING TO ME. WE JUST BUY THE CHEAP TYPE FOR THE CATS AND I MAKE BEDS FOR THEM WITH IT ALSO. WE ALSO TAKE TWO STORAGE BINS AND PUT ONE UPSIDE DOWN ON THE OTHER AND COVER IT AND PUT A PAD IN IT. THAT GIVES THEM A CAVE THEY RALLY LIKE. THEY WOULDN'T USE THE ONES WE BOUGHT AT THE STORE THAT ARE ALSO SCRATCH POST.BUT THEY WILL USE ROPE SCRATCHING POST. CATS ARE FUNNY LITTLE CREATURES. BUT WE LOVE THEM.