Flat Stacks are microwave, dishwasher and freezer safe however we recommend washing the lids by hand as they will last longer and won’t lose their shape.
In respect to this, are flat stacks microwavable?
Flat Stacks are 100% microwave safe. Simply lift the air valve on top to release the steam. Push the valve down to seal the container making it air-tight before placing them in the fridge, freezer or cupboard.
Similarly one may ask, how do you use flat stacks?
Moreover, what is flat stacking?
Flat stacking is a passive approach to playing Tetris. As the name implies, the goal of flat stacking is to keep one’s stack as flat as possible. This is primarily accomplished by keeping all of the pieces (except the O) in a horizontal orientation as much as possible.