Changing Mat Cat When open: 50cm wide x 68cm long. When compactly stored: approximately 20cm square. The back is made of non-woven fabric and is slightly thick, so it's difficult to feel the floor. I never had a chance to use it outside after purchasing it, and I only tried it at home. Please understand that it has been stored for a long time. As shown in the photos, there are initial stains and stains that occurred after opening. I have inspected it, but I apologize if I missed anything. Instant purchase OK