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The Optimus 20oz tumbler is crafted from recycled stainless steel with double-wall vacuum insulation to keep drinks at the ideal temperature. Hot drinks stay warm for up to 6 hours, while cold beverages remain chilled for 12 hours with a sleek matte finish and a customizable laser engraving area, this eco-friendly tumbler is perfect for branding and includes a spill-resistant AS lid for secure sipping on the go.
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