The Medium Mug In (300ml) If this item is currently out of stock but you want to secure it in our next firing, you can pre-order it now if you like.   In our larger 300ml size for a more generous cup, these interlocking handmade mugs designed to sit together in two complementary shapes, inward and outward sloping – to keep your tea warm, and let your coffee cool. With strong lines and crisp handles, we bring clean, architectural lines to a traditional craft to produce functional objects that can be used every day in the home. Size In: 8.5 x 7 x 8.5cm, capacity 300ml. Glazes: From our Market and Cityscape collections.