Pairs Ti-lite 30 oz. Capacity Mug with a titanium 13 oz. Capacity lid-pan to create a double boiler system which allows you to cook two items at once. The lid-pan is uniquely designed to nest on top of the mug to utilize the captured heat from the mug to cook food slowly, preventing burning. Lid-pan and mug can also be used separately. Nylon mesh storage bag. Titanium construction.