Enjoy your favorite drinks on the go with this Insulated Travel Coffee Mug made from premium food grade stainless steel available in 350ml and 480ml sizes and seven stylish colors Blue Yellow Green Red Pink Indigo and Purple featuring a unique 2 in 1 lid design with straw opening on one side and sip opening on the other The double wall vacuum insulation keeps beverages hot and cold for 4 to 6 hours making it perfect for coffee tea water or chilled drinks The spill proof flip lid prevents leaks while the non slip protective cover ensures a secure grip making it ideal for office school travel gym or outdoor use About insulation time The insulation duration is measured from the moment you pour your beverage at its original temperature into the mug For example if you pour hot water at 95�C the mug will keep it warm for around 4 to 6 hours depending on the environment Similarly chilled drinks will stay cool for up to 6 hours How to improve insulation performance Pre heat or pre chill the mug with hot water or ice water for 2 to 3 minutes before filling Close the lid tightly to prevent heat or cold loss Keep the mug full as a fuller mug retains temperature longer than a half filled one Avoid frequent opening of the lid as it releases heat or cold This insulated mug is durable reusable BPA free and eco friendly offering the perfect combination of style and performance for daily use