This is an official Port Charlotte (by Bruichladdich) custom-branded matte black insulated tumbler. With a 550ml capacity, it features an inner liner made of food-grade 304 stainless steel (compliant with national standards) and offers excellent heat and cold retention. It is suitable for daily hydration, on-the-go use, and preparing or enjoying chilled water. The tumbler sports the Port Charlotte Islay Single Malt logo and boasts a minimalist matte black finish with a substantial, premium feel.