1. high quality material: 3D swirl carpet is made of crystal velvet, soft, comfortable and durable. 2. BOTTOMLESS CARPET: The black and white shaded pattern gives an optical illusion and creates a 3D effect that makes you feel like you are in a bottomless pit. The 3D effect of the swirl carpet is not easily visible to the naked eye. The 3D effect is even better when the Vortex Mat is used in conjunction with other references or photographed. 3. Illusion Carpet The Vortex Illusion Carpet is a striking piece of home dcor. You can use it to interact with your pets and test their intelligence, and they may go around or jump over it. 4. EASY TO CLEAN: 3D Optical Illusion Carpet is easy to clean. You can use hoover or dry cloth to clean it. NOTE: After receiving the product, please hand wash and air dry. Please use an iron to iron it. 5. Applicable occasions: the size of the illusion carpet is 40*40 cm. The illusion floor mat is suitable for decorating living room, bedroom, study, office, etc. If you have any questions, please feel free to contact us.