The double wall, vacuum insulated body reduces condensation and allows food to stay hot up to 7 hours and cold up to 9 hours. Featuring a tight-fitting twist lid with silicone seal to ensure no leaks. Bpa free. Easy to clean. Made to last a lifetime. Eco friendly. Made from high grade 188 stainless steel. Wash in hot soapy water prior to first use and rinse thoroughly. Hand wash recommended.