Premium 350ML/500ML reusable stainless steel coffee bottle with double-wall vacuum insulation for superior temperature retention. Crafted from food-grade 304 stainless steel, featuring a precision-machined leakproof lid and sweat-proof exterior. Ideal for both hot beverages (coffee/tea) and cold drinks, maintaining heat for 12+ hours and chill for 24+ hours. Customizable branding options available for bulk orders. Commercial-grade durability with scratch-resistant finish, perfect for office use, outdoor adventures, or promotional giveaways. BPA-free construction with wide mouth for easy cleaning. Stackable design for efficient storage and shipping.