We have developed a sustainable product that combines industrial and natural resources to promote environmental sustainability and human health, ensuring it’s free from harmful contaminants. Lined with Purist Technology We created this technology by taking a naturally occurring compound, to create an inner barrier.It effectively stops contaminants from entering beverages and guarantees a seamless transition between drinks, without any metallic taste or lingering flavors. Surgical-Grade Stainless Steel Corrosion resistant Hypoallergenic Environmentally Sustainable Lead free Double-wall vacuum insulated 12 hours hot / 24 hours cold depending on lid style