This modern three-piece glass mug is a convenient self contained brewing system. The 500ml-capacity heat-resistant borosilicate glass mug is fitted with an inner glass brew basket that lets your tea steep with plenty of room for leaves to expand. The basket is fitted with a removable cushion to protect against repetitive impact. When your tea is ready, the stainless steel cover flips over to use as a saucer for your brew basket until you are ready to resteep your leaves.