Andreas Silicone Jar Openers are designed with one side rough and one side smooth for easy, firm gripping when it comes to loosening those stubborn jar and lids. Best of all, they stick to any metal or glass surface including your microwave, refrigerator, stove, windows, cabinets, back splash etc., and they are always right there for you to use. Our jar openers are even great for your car dash to keep your cell phone in place. Made from high-grade silicone and the fabric of your choice, our jar openers are also dishwasher safe and can even double garlic peeler.