Thermos: Get a fantastic thermos flask. Capacity: 500ml bottle measuring 22cm x 6.5cm. Stainless steel: Made from smooth stainless steel. Hot/Cold: Keep your water cold, or your hot drinks warm – ideal for tea, coffee and hot chocolate! Features: Keep your drink hot for six hours above 68 degrees, or cold for six hours below 11 degrees. Leak proof: A secure vacuum bottle that is perfect to throw in your bag or car with no spills.