Excellent material: Our travel coffee mugs are made of the highest quality 18/8 stainless steel, durable and rust-resistant, leaving no metallic odor. In addition, it does not contain bisphenol A and is easy to clean. The thermos water bottle is the perfect solution to replace hundreds of plastic water bottles. Keep hot and cold: Our stainless steel water bottle can keep cold and hot drinks (water, coffee, tea) for 12 hours at low temperature and keep warm for 12 hours. Prevents condensation from forming outside the bottle. The coffee thermos bottle offers double service and can be kept warm all year round, making it the perfect choice for you. Safe and leak-proof: Our thermos cup has a small lid that acts as a small cup to hydrate you. The inner lid is sealed with a silicone ring and is leak-proof and resistant to high temperature and aging. Gently press the latch to open, the latch is firm and easy to use. Perfect item: Our insulated water bottle is cute, stylish and small. The slim insulated coffee mug is easy to hold. Our coffee bottles are the perfect daily companion, whether for outdoor activities such as hiking, cycling, camping, travel or work. It is also an ideal gift for birthdays, Christmas, Valentine's Day and other holidays.