This high-quality, BPA-free flask the perfect spot to feature your custom engraving for maximum brand visibility. It's designed to impress with recycled stainless steel and a powder-coated finish in trendy colour options. The dual-open, twist-on lid comes all the way off for easy filling and cleaning, but also features an innovative, 360° sip-from-anywhere modular lid system. Constructed with vacuum insulation, this flask maintains the ideal beverage temperature for hours of enjoyment. It keeps drinks cold for up to 18 hours and hot for up to 6. Additionally, this flask comes with an NFC smart chip. This chip allows owners to register their brew flask on the Ocean Bottle Mobile App. When they do, each refill will help fund the collection of ocean-bound plastic at no cost to them. Dishwasher safe; do not microwave.