Thank you for viewing! This is a protective cover to be used over the chin rest of a violin or viola. It protects your precious instrument from dirt and sweat, and is made at the request of those with allergies to metal or varnish, or those with sensitive skin. This cover can be used for both violin (4/4) and viola if the chin rest is a Guarneri or Kaufman type. (Currently not compatible with Fresh type or other shaped chin rests) Outer dimensions are approximately 20cm x 12cm, the pocket opening is about 10cm, and the depth is about 4.5cm. The front side is a blue-gray fabric with a black cat and rose pattern (cotton linen canvas), the inside is plain black broadcloth (100% cotton). There is no batting inside, so it is thin and stress-free to wear. *Please refrain from purchasing if you are concerned about the scratchiness of the linen. ⚠️Photos were taken with a smartphone, so the colors may not be perfectly accurate. Please understand that the actual product may differ slightly in color from the photos. Cover the chin rest with the pocket part and secure it with the elastic on the back. We use very soft mask elastic so it won't damage your precious instrument. It shouldn't affect the sound, but if you are concerned, you can put it over the shoulder rest or wrap it around the shoulder rest. You can also thread it through the shoulder rest to save the trouble of attaching and detaching it every time. The length of the elastic can also be finely adjusted with the stopper. This stopper is also made of silicone, so it will not affect the instrument or the sound. The button is made of acrylic, but the back button that touches the instrument is made of soft felt fabric. Please hand wash gently when dirty. Ironing is possible except for the elastic and buttons. Images 9 and 10 are the instruction manual. (A sample was used for the photo) ⚠️It will not be included. Please download it if necessary. We carefully make each item with the utmost care and attention as stringed instrument players ourselves, but as they are handmade, please refrain from purchasing if you are overly concerned about details. Thank you for your consideration! ♪