Dark Green, BlackWith its balanced aesthetic, the KOIY Optima drinking bottle is understated, yet classy with a convincing presence like no bottle before. An outstanding masterpiece: elegant, versatile and flawlessly engineered. Its unique lid features a swappable ring and is made from a single block of stainless steel. Engraved meticulously with 1,500 micro pyramids and satin coating. The mouthpiece is laser polished and shows no outward facing thread. A unique
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