The Advantages of Using Textured and Durable Rubber Grips to Open Jars: Crafted from high-quality, non-toxic silicone, these grips offer excellent leverage for opening stubborn jars and can endure wear and tear over time. Measuring 5"x5" in diameter, these rubber grips are the perfect size for anyone struggling to open jars, bottles, or lids, especially seniors with weak or arthritic hands. Not only do these rubber grips improve grip strength, but the multi-purpose bottle opener or coaster also adds a touch of style to any kitchen with its modern color palettes that brighten up any counter or table. Additionally, it provides heat resistance and moisture barrier for kitchen counters and tables.