The 32 Oz. LARQ Bottle Movement PureVis™ actively self-cleans and improves water quality in a lightweight single-walled stainless steel build–perfect for outdoor adventures, going to the gym, or whatever moves you. Double-wall vacuum insulation keeps your water cold for 24 hours or hot for 12. It uses PureVis technology to neutralize up to 99%* of E.coli from your water and bottle. *Based on elimination 99.8% of E.coli in a 20-second cycle for all LARQ Bottles. Color is black/clay and not available in their store currently. Used and in great condition. Questions? Leave a comment below!