Pocket-sized, super lightweight collapsible cup packs that flat for storage or transport Food grade silicone is heat resistant, dishwasher safe and ideal for camping, backpacking, or travel Rigid Nylon rim holds its shape and provides a comfortable grip for handling hot liquids Calibrated internal ridges serve as a measuring cup X-Cup capacity one cup (250ml), weight 1.6oz, diameter 3.75-inches Part of the X-Series of lightweight camping dinnerware from Sea to Summit, the X-Cup and the larger X-Mug are made from flexible, food grade silicone that is collapsible and packs down flat. A rigid rim holds its shape and provides a comfortable grip for handling hot liquids. Calibrated internal ridges also serve as a measuring cup. Food grade silicone is heat resistant, dishwasher safe and ideal for camping, backpacking, travel or lunch boxes. X-Cup capacity one cup (250ml), weight 1.6oz, diameter 3.75-inches. X-Mug capacity two cups (500ml), weight 2.1oz, diameter 4.5-inches.