the moisture evaporation builds up to the point of literally splitting the bean open

POTASSIUM SORBATE (TO PRESERVE FRESHNESS)

the ION makes a great office water cooler where space may be limited

100% leakproof

YETI Rambler 6 oz. Espresso Cups Set of 2, Seafoam Knock Boxes & Mats the moisture evaporation builds upThe YETI Rambler 6 oz. Stackable Mugs are just the right size for a flat white on the deck and a cortado at camp. Plus, its DuraSip Ceramic Lining, over engineered firm grip handle, and stackability make it ideal for espresso machines, camp kitchens, and beyond. It features a nonstick interior that resists staining from highly acidic beverages like coffee and like all YETI Rambler Drinkware its dishwasher safe. More Info Barista friendly design.