[High quality] Made of high quality 304 stainless steel, electro polished on the inside, BPA free, non-toxic and eco-friendly, will not rust, not easy to deform and crack, colored powder coated finish on the outside, easy to grip, not easy to fade [Vacuum insulation] Double layer vacuum insulation technology, can keep beverage cold for 9 hours and hot for 3 hours, the exterior of the vacuum sealed area is dipped in copper for added insulation and sweat proof [Size] Cup size: large capacity to meet the needs of drinking, can enjoy a cold drink by the pool, and enjoy iced coffee anytime and anywhere, suitable for iced coffee, juice, water, beer etc [Applicable] Suitable for camping, travel, office, boating, picnic, swimming pool, beach or patio, etc.; Perfect for office workers, drivers, students, teachers, grilling experts, party favors, sailors and more; And can also be given as a gift to relatives and friends [Vacuum insulation] Double layer vacuum insulation technology, can keep beverage cold for 9 hours and hot for 3 hours, the exterior of the vacuum sealed area is dipped in copper for added insulation and sweat proof [Easy to use] The wide mouth opening allows quick cleaning and quick filling; Comes with non-spill cap and reusable stainless steel straw to prevent spills and help with drinking; And included a straw brush for straw cleaning [Size] Cup size: large capacity to meet the needs of drinking, can enjoy a cold drink by the pool, and enjoy iced coffee anytime and anywhere, suitable for iced coffee, juice, water, beer etc [Applicable] Suitable for camping, travel, office, boating, picnic, swimming pool, beach or patio, etc.; Perfect for office workers, drivers, students, teachers, grilling experts, party favors, sailors and more; And can also be given as a gift to relatives and friends