Koppen Mug 0.3 from Primus is a thermos mug in stainless steel that works just as well for the office as for your outdoor activities. The mug has double walls that keep drinks both hot and cold and the food-grade steel neither absorbs nor gives off taste.\n\nLarge opening that is easy to fill and clean18/8 stainless steelLid in BPA-free plastic Primus Koppen Mug 0.3 Black | Buy Primus Koppen Mug 0.3 Black here | Outnorth