YETI Rambler 30 oz. YRAM30PPUR is a beautiful mug that you can buy for daily use. This container is made of 18/8 stainless steel and it is rust-resistant. The magnet makes it easy to open and close the mug. The double layer vacuum wall keeps the temperature up to 8 hours. The size of this drinks container is perfect to hold on your car’s cup holder or bike.