Chie Mat Black This is an older model, so there is no label. I believe the function is the same. The cover can be removed and washed. It is in the condition shown in the photos, but there is some deterioration over time. This is a used item, so we would appreciate it if you could purchase it if you understand this. Four reasons why you should use "Chie Mat" [Reason 1] By adjusting the inclination of the sacrum, which is common in the Japanese skeletal structure, it makes it easier to maintain good posture. Modern people with poor posture and those with weakened physical strength often have a backward-tilted pelvis (slouching). When you sit on the "Chie Mat," the gravity on your lower back becomes even, the pelvis tilts slightly forward, the spine straightens, and your posture improves. [Reason 2] The special two-layer structure of the "Chie Mat" makes it less tiring to sit for long periods. Sitting for long periods tends to impair blood circulation, but the double structure of a special material that feels similar to human muscles and a subtle slope make it less tiring. Also, because the pelvis is stabilized, you can spend time comfortably even in a vehicle. [Reason 3] You will be able to live an active life every day. The "Chie Mat" fits your body the more you use it. You won't have to take unnecessary postures, so you won't get tired easily, and you'll be able to live an active life every day. [Reason 4] The efficiency of desk work will improve. By improving your posture, you will be able to perform office work and computer operations more comfortably and quickly.