Crafted with a premium 316 stainless steel inner layer with a food-grade ceramic coating, offering odor-resistant, stain-resistant, and high-performance insulation. Prevents metallic tastes and is suitable for a wide range of beverages, including coffee, milk, and tea. With a 485ml capacity, it’s spill-proof and perfect for hot or cold beverages for up to 6 hours. The thermos comes with a straw and straw cover, both easy to clean, and includes a washable wrist strap for convenient carrying. An adjustable long strap accessory is also available for hands-free use.: PRODUCT DETAILS: Outer – 304 Stainless Steel Inner – 316 Stainless Steel Cap & Body – ABS/PP Bottom & Straw – Silicone Rubber Short Strap – Cotton-filled Nylon Capacity: 485ml Weight: 315g (empty bottle) Dimensions: 9.8W x 9.8L x 14H cm (exclude strap) Include: 1 x Short Strap KEY FEATURES: Keep Warm, Stay Cold: Keeps hot water and ice up to 6 hours. Ergonomic Design: Easy to grip and carry, fitting comfortably in most car cup holders and bags. Style Meets Function: Perfect for staying hydrated during your workday, fitness routines, or outdoor adventures. Leak-Proof Design: A reliable sealing ring prevents spills, making it ideal for travel or commuting. Built-in Cup Lid: Attach cup lid to the buckle or use it as a straw cover. Smart Functionality: Swap in a spoon attachment (sold separately)—perfect for porridge. Two Ways to Carry: Use the short strap for wrist carry, or the long strap (sold separately) to wear it crossbody. Two Kinds of Insulation: 316 stainless steel liner resists heat and corrosion & ceramic coating adds odor and stain resistance. Easy to Clean: Each part can be disassembled for easy cleaning.