Thank you for viewing! This is a protective cover to be used on 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 on both violins (4/4) and violas if they have a Guarneri or Kaufman type chin rest. (Currently not compatible with Fresca type or other shaped chin rests) Outer dimensions: Approximately 20cm x 12cm Pocket opening: Approximately 10cm, depth approximately 4cm. The front side is a cherry blossom pink base with a white Nordic floral pattern (100% cotton), and the inside is plain pink (100% cotton). There is no batting inside, so it is thin and stress-free to attach. ⚠️ The colors in the photos may not be exactly as they appear due to smartphone photography. Please understand that the color of the actual product may differ slightly 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 on top of 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 each time. The length of the elastic can 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. If it gets dirty, please wash it gently by hand. Ironing is possible except for the elastic and buttons. The instruction manual in images 8 and 9 will be included. (A sample was used for the photos) As a stringed instrument player, I make each one carefully with care and attention, but since they are handmade, please refrain from purchasing if you are overly concerned about details. Thank you, and I look forward to your order!