Travel to Uruguay and you'll soon notice a unique habit: many Uruguayans sip mate, a caffeinated drink with a flavor comparable to green tea, as they drive, walk, shop, and otherwise go about their daily lives. The supplies for this frequent sipping—a thermos, cup, and metal straw—are carried in a satchel called a matera. Should you also adopt the habit, we suggest this handsome red matera for your morning commute.