The engineer's measurement

Engineering design thermal bottle for cooling 12 hours and heating 6 hours available in several sizes 350 ml, 450 ml, 600 ml comes with a metal straw, cleaning brush, and airtight lid features: 1. maintains temperature: • hot drinks stay warm for up to 6 hours. • cold drinks retain their coolness for up to 12 hours. 2. long-lasting fixed print: • thermal printing adds a unique and elegant touch, lasting with you no matter how you use it. 3. comfort and safety while on the go: • thanks to the airtight lid and practical design, you can use it safely in the office, car, or during trips. 4. saves time and effort: • no need to reheat coffee or cool down juice, the cup takes care of your drink's temperature all day. 5. environmentally friendly option: • reducing the use of paper cups to contribute to environmental preservation.