This slim bottle is made of food-grade stainless steel inside and outer, not easily scratched and broken. The double-wall vacuum insulation technology keeps your beverages hot or cold for a long time no matter what the climate outside, and the cup's surface will be always in a comfortable temperature whether it is hot or cold drink inside. It is suitable for your gym bag, car, bicycle and backpack to enjoy your long hikes, sports, school, work, picnic, traveling, driving or the other activities. The candy colors design let you stand out from the crowd and you will love it. It is the best gift for your friends and family members.