Featuring an innovative dual-layer design, this versatile bottle includes a 570ml high borosilicate glass inner cup and a 600ml 316 stainless steel outer cup that can be used together or separately. Built from premium BPA-free materials, it delivers exceptional temperature resistance from -20°C up to 110°C, keeping your drinks hot or cold for up to 6 hours. It comes complete with two interchangeable straws—a wide silicone boba straw and a flat straw—and is designed for effortless one-handed portability, making it perfect for commuting, studying, or lounging. For ultimate convenience, the bottle is sized to fit most car cup holders and features a wide mouth with fully detachable parts for quick, hassle-free cleaning.