Classy and trendy, this is a favourite among true tea lovers.  Easy to carry and adjustable to a more manageable size for ease of travelling around.  The tumbler consists of 2 sections - The top section is a single glass walled compartment where your tea leaves go.  The bottom section is a double glass walled compartment where your infused tea is kept for drinking.  As the bottom section is double glass walled, it is naturally insulated to prevent scaling.