• [Body Fit Shape]: The mortar shaped bed fits the cat's round body. The comfort of a cat will never come out once you put it in. It is easy to use as a bed, and the cat will curl up and sleep in an exceptional cuteness • Keep Your Favorite One: The sharpener can be replaced (sold separately). The frame can be replaced as is, so you can use your favorite sharpener for a long time • (High density cardboard that can be used on both sides and lasts twice as longer) Made of high-density cardboard, so it is durable and hard to sharpen it. Reversible design that can be flipped over even if one side gets bumpy • Carefully selected ingredients: Cardboard is made from high-quality New Zealand raw pulp, and plant-derived glue is used for gluing. We focus on quality that makes it easy for cats to pick and breathe • Pursuing Difficult to Sharpen: The unique design is hard to sharpen the perfect balance between density and material