Looking for a small Thermos Flask that you can easily take with you to work or school, for example? The Sareva Thermos Flask 300 ml is small in size and therefore very convenient to take with you quickly! The bottle is made of stainless steel, is impact and break resistant and 100% leak proof. It also keeps your drink hot for 12 hours and cold for 24 hours. Great for the hottest summer days and the coldest winter days!