"This is it. This is the one. They are lightweight, strong, and just plain feel 'good' in the hand." - Carlos Vidal Marcelino, Jan 26, 2023
WARNING: VAC-STACK TUMBLERS MIGHT LEAVE YOUR OTHER CUPS WITH THICK COATS OF DUST FROM LACK OF USE.
Regular tumblers might be ok when you need hours worth of hot coffee, but for every other drink they are inefficient. These food-grade stainless steel cups are BPA free and a great alternative to breakage-prone glass and flimsy plastic. Use them at home, for camping, at the pool, at the beach, for picnics and boating or anywhere you don't want to lug around a bulky tumbler.