The Insulated Stainless Steel Flask by Bambaw is the ideal, all-round companion. It preserves the cool temperatures of cold beverages on hot summer days for up to 24 hours while keeping hot drinks warm for up to 12 hours during winter. The bottle is equipped with a bamboo lid and the bottle opening is wide enough to add ice cubes or fruits to the drinks it contains. Simply clean the bottle using a suitable brush once empty. The bottle is BPA-free and does not expel any chemical that may harm your health.