The tentacle glass holds 16oz. (a bit less than a half litre for you metric types) of your favorite liquid. We find it useful for storing excess Mi-Go Cylinder Brain Suspension Fluid - but that's just us. They are dishwasher safe, sturdy and strangely lovely.
Or have a few of your friends over and enjoy our Tentacle Glass Pub Set. It's a four-pack of these terrific vessels.