Material:The outer layer of thermal water bottle adopts two layers of leather and nano printing technology, environmental protection and beauty. Durable stainless steel interior and exterior. Built-in stainless steel cap/lid lets you enjoy your beverage anywhere. Application:The 500ml drinking bottle is a perfect choice for office and outdoor sport. Thermal cup is suitable for running, hiking, fishing, cycling, travel, fitness, outdoors, yoga, meditation, the gym, hiking and any outdoor activities. KEEP DRINK COOL or HOT: Thanks to double-walled vacuum of coffee thermos insulated stainless-steel body, Your drinks will stay hot for up to 12 hours or cold for up to 24 hours. Wide Mouth Design:The wide enough bottle mouth of thermal mug is easy to add ice cubes, lemon and other fruits.Wide mouthpiece is ideal for quick, easy drinking. Our stainless steel mug is health and safety. Leak Proof : Food Grade odorless silicone seal ensure the thermos flasks mouth is sealed and will not spill water. No afraid of knocking over the bottle, also guarantee maintaining at original temperature.