Inspired by nature, the Elements Collection features a shiny, high-gloss finish that mimics the lustre and sheen of organic materials culled from ancient quarries. Each bottle is one-of-a-kind, just like the individual who carries it. S'well bottles feature Therma-S’well(R) Technology with triple-layered, vacuum-insulated construction designed to keep beverages colder or hotter, longer than all the rest. BPA Free and reusable. Stainless steel. 17 oz. Hand-wash only.