♥ MATERIAL QUALITY: The Vacuum double wall is made of stainless steel that is completely taste-free and leak-proof. The lid comes with an airtight silicone seal that saves drinks from slipping. The bottom has skid resistance and scratch proof. ♥ PERFECT FOR HOT AND COLD DRINKS: Vacuum technology supports heat and cold preservation, and can be used to keep both cold drinks and hot drinks. ♥ CAPACITY: Large capacity of 510 ml and Easy to Carry, Body design makes it Easy to Grab and Walk, Car cup Holders and Coffee Makers Easy to Fit. ♥ SUITABLE FOR MULTIPLE OCCASIONS: This is designed for everyday use at home, office, outdoors, sports, traveling, camping, and driving. Perfect for office workers, drivers, students, teachers, BBQ experts, party favors, etc.. ♥ EASY TO WASH AND SAFTY: The coffee travel mugs are easy to hand wash or wash great in the dishwasher