This 40 oz large-capacity insulated tumbler is crafted from food-grade stainless steel with a double-wall vacuum structure, delivering 12 hours of heat retention and 34 hours of cold retention-ice even stays frozen overnight. It features an ergonomic large handle with a thumb rest for a comfortable, non-slip grip, plus a perfectly sized base that fits most standard cup holders, making it ideal for on-the-go use. The tumbler comes with a 2-in-1 versatile lid: insert a straw for spill-proof sipping, or remove it to use the flip-top for direct drinking. It also includes 2 straws and a cleaning brush for easy maintenance. Boasting a generous capacity that cuts down on refills, it supports your all-day hydration goals. The food-grade material ensures rust-free, odor-free performance, locking in the fresh taste of your beverages and making it a perfect companion for home, travel, and beyond. Color: Black.