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Owala vacuum thermos cup, 4oz large capacity, featuring a 304 stainless steel inner liner. Double-layer vacuum technology keeps the temperature stable for 24 hours in cold mode and 12 hours in warm mode. It has a portable handle design that allows opening and closing with one hand, dual drinking spouts for direct drinking, and versatile usage suitable for various scenarios. The leak-proof lid ensures safe storage in bags. Complies with FDA standards and has passed LFGB certification, making it safe and non-toxic. Say goodbye to icy coldness—every sip is at the perfect temperature. Whether for commuting, exercise, or travel, Owala turns drinking water into a pleasure. Choose Owala and embrace a healthy lifestyle.