Dycem Jar Openers are dome shaped to fit comfortably into the palm of the hand. Fits all lid sizes and ensures a good seal when closing. The Jar and Bottle openers' are also ideal for people with a weak grip, decreased sensation in their hands and upper extremity weakness. Dycem openers can help with opening; Medicine bottles/Rx bottles, Jars, Door knobs, Cabinet handles, Faucets, Drinks bottles.