The wheel has sisal on the inside and out but whilst the cushioned pads may be taken out, the carpet can’t. The wheel provides a twenty-inch diameter, so is basically only suitable for modest cats and kittens, and it will keep a maximum cat excess weight of 15 pounds. https://catexercisewheeltreadmill80123.blog5.net/68495658/a-simple-key-for-cat-exercise-wheel-treadmill-unveiled