Silicone sleeve is Made of Elastic Fabric Lined with Silicone Gel. Silicone sleeves can protect objects from scratches, impacts, and damage caused by exposure to extreme temperatures, moisture, chemicals, and UV radiation. Medical silicone sleeve, known as silicone rubber sleeve, rubber bellows, which made from biomedical silicone material as a protection to medical care. For everyday maintenance, wash your silicone sleeve tube with warm water and mild soap. A little rinse and a soft sponge work best to remove any germs or residue. The bottle and cap should be washed daily or every other day at a minimum.Want to know more about silicone tube sleeve, contact Ruixiang.