The Sonik Sizzla Flask is built from high food grade 304 stainless steel with a double walled vacuum insulation for maximum temperature retention. It keeps contents hot for up to 24 hours and cold for up to 24 hours, and features a leakproof, BPA free push-button stopper for easy pouring. The flask has a tough powder coated finish and includes a large 200ml screw cap cup. - Capacity 10000ml