Ideal for anyone with strength in just one hand, the Ergo Mug features one handle for gripping and a lip on the opposite side, allowing the cup to be supported with both hands, even when only one can grip.Grooves in its wall make it easier for you to grip and graduation marks enable you to see how much liquid you?re drinking. Available in three colours, the Ergo Mug is made from polycarbonate plastic, making it lightweight and safe to use in the dishwasher and microwave.An optional lid with drinking spout is also available to purchase separately.Internal Handle height is 8.2cmBottom diameter is 5.5cmTop diameter is 10cmTotal height is 10cm