Sigg wide mouth siggnature black 10l the perfect bottle for sigg fans young and old sigg information sigg water bottles are made using single piece impact extruded aluminium with no seams ensuring they are extremely durable the special manufacturing process makes sigg a high quality lightweight and virtually unbreakable water bottle made from one piece extruded aluminium construction hygienically coated inside to help alleviate contamination of contents the internal coating is re