This 40oz large-capacity stainless steel car cup with ergonomic integrated handle delivers ultra-large 1200ml drinking capacity to cut down frequent refills during long drives, road trips, camping and daily outdoor outings. It adopts double-layer stainless steel construction with food-grade 304 stainless steel inner liner and 201 stainless steel outer shell, featuring vacuum insulation technology to retain cold or hot temperatures for all-day enjoyment. Equipped with a multi-functional flip transparent lid, it supports two drinking modes: install the matching metal straw for sipping iced coffee, smoothies and cold drinks, or flip open the silicone plug for wide-mouth direct drinking of hot water and tea. The smooth matte exterior paired with a thickened anti-slip bottom prevents sliding inside car cup holders and protects surfaces from scratches, while the seamless polished inner wall resists beverage stains for effortless cleaning. Multiple trendy matte color options are available, each packed with matching straw accessories in individual white boxes; customized logo printing and bulk wholesale orders are fully supported for retail sales, corporate gifts and promotional merchandise.