Since 2010, S'well's enhanced design excellence and mission have made it a leader in the industry. The bottle of S'well is made of high-grade 18/8 stainless steel, which is non condensing and can keep the beverage cold for 24 hours and hot for 12 hours. S'well's mission is to free the world from plastic bottles, while also giving back to communities in need through our collaboration with UNICEF and BCRF.