This is a thermos, sports bottle, and travel mug all in one. Two different lids, both in functionality and design, come with the metal body, allowing for convenient use of the thermos cup at home, on a walk, or at the gym. It has a capacity of 335 ml. The double-walled construction with vacuum insulation keeps contents cold for up to 24 hours and hot for up to 12 hours. Two leak-proof lids included: one with a flip spout, the other with a screw-on cap. Non-slip rubber coating on the bottom. Fits in most car cup holders. BPA-free. Not suitable for carbonated drinks or beverages with pulp. After filling with boiling water, let the liquid cool for 1-3 minutes. This will prevent deformation of the plastic lid components, which soften at high temperatures.