Its odourless material reduces any changes to the smell or taste of its contents. It is convenient to carry, either on a bike or in a bag. It is made using three layers to maintain the heat or the cold. Available in 6 colours.Key Features:Maximum temperature: 80C - 176F maxOutside: metallic PET and polyethylene foam/Inside: white PECapacity: 550ml / 18oz Insulated bag:Material: PolypropyleneCap: Grip-Cap - Screw-onInner tank: PolypropyleneInsulation Time: 2.5hrsHeight: 215mmWeight: 100g