Ergonomically Design,hold on cups will not drop, stay firmly with ramblers,Comfortable handle firmly grips your tumbler at any angle, even upside down without straining your hand or wrist. Hang your stainless steel cup securely.also fits most car cup holders. One of the perfect gadgets to compliment your mug in any season or environment. Great for someone who has arthritis, diabetic hands, tendonitis or small hands. It adds comfort and when drinking, makes it easier to handle the heavy cup. It's also a great gift for your family and friends. BPA free,made from high quality food gradable polypropylene, Easy to clean under the tap or water, can keep to you a clearn and a healthy cup handles,ideal for travelling, outdoor activities. The handle is extremely rigid , Light weight, Strong and Dishwasher safe. With a single ring that that you can comfortable grip your tumbler like it was it,You can flip your cup in any direction with confidence.