The collapsible FlexWare Mug is a convenient way to serve hot or cold beverages on the trail. The fold-out handle makes drinking hot beverages easier. The FlexWare Mug is made of heat-resistant, food grade BPA-free silicone. Can withstand temperatures up to 300F(149C). Dishwasher and microwave safe. Capacity 6.8 fl. ounces. Dimensions Expanded 3.4″ x 3″.