The LifeStraw Go Series is the ultimate companion for safe, great-tasting water for travel and everyday use. The BPA-free stainless steel bottle filters out harmful substances, allowing you to refill water at airport restrooms, a tap in Mexico, or a gas station while traveling. The advanced 2-stage filter enhances taste and protects against bacteria, parasites, microplastics, chlorine, mud, sand, and cloudiness. The double-wall vacuum insulation keeps water cool all day long. All components of the LifeStraw Go Series water bottles are completely BPA-free. Do good on the go and avoid single-use plastic bottles. Your purchase makes an impact: LifeStraw's Doing Good program provides a needy child with clean water for a year. LifeStraw is proud to be a B Corp and a climate-neutral certified brand committed to meeting the highest standards for verified social and environmental performance, transparency, and accountability.