Rubbermaid Sistema 2.8 Cup Soup Mug. Travel soup mug is ideal for soup, stews, noodles, and hot drinks at home or at the office; heat soup mug in the microwave and eat or drink straight from the mug. Medium microwavable mug holds up to 19.1 oz of your favorite soup or drink. Lunch mug features an easy-grip handle, plus lid with open/close steam vent to prevent splattering in the microwave. Easily stackable in your cabinet and fridge; great for meal prep. Freezer safe, microwave safe with vent open, and top-rack dishwasher safe, plus BPA-free