With advanced double-walled insulation, this cup keeps your drinks cool for 34 wonderful hours and hot for up to 12 hours. This technology ensures that your beverages will maintain the perfect temperature all day, making it the perfect companion for anyone who appreciates both functionality and longevity in their drinking pots. 【 ENVIRONMENT】:There is no excuse to buy plastic again. These modern reusable beverage cups are an eco-friendly solution that protects you without harmful substances! Our products are made from 18/8 food grade stainless steel and are BPA free. The cover yells durability and scratch resistance. Your cold beverage will be kept fresh, no metallic taste, and odor-free. Perfect for on-the-go lifestyles, this insulated tumbler fits with most cup holders, allowing comfort while driving or on the go. Its versatile design makes it perfect for hot and cold drinks, serves as a travel coffee cup or a refreshing water tumbler for daily use at home, the office, or during outdoor activities. Constructed from high quality 18/8 food grade stainless steel, this tumbler is not only durable but also environmental-friendly. It is BPA free and designed to eliminate the need for disposable plastic cups, promote a sustainable lifestyle. The lid is scratch resistant and durable, ensuring your beverage stays fresh with no metal taste or scent. This dullness is a responsible choice for those who are interested in the environment. 【GAN GO HANDGRING】:The 30oz tumbler with handle gives you a comfortable comfortable grip handle for easy carrying drinks on work, gym or trips. Strong yet smooth to the touch