With 110 years of experience, Stanley delivers when in search of a top notch thermos. The Artisan lineup is made to last: its materials are super tough, and the surface is covered in durable powdercoating. - The bottle keeps drinks hot for 41 hours, cold for 43 hours and thawing ice takes up to 6 days - 4D Thermology insulation - Main material: 0.8 mm thick, series 18/8 stainless steel, made of recycled materials - Both the bottle and the cup have a double layer steel structure - Leakproof - Machine washable - A nifty pouring handle - The product is BPA-free