When you buy glassware, it will come with instructions on how to wash it. Usually, there are markings on the bottom of the glass that indicate whether it's safe for dishwashers. However, since all of these have some designs on them, I would strongly advise you to take the extra few minutes and wash them by hand. I say this as someone who will do just about anything to put glasses in the dishwasher out of pure laziness. My tip for the taller glasses, especially the wine glasses in the highball glasses, if you can't reach to the bottom and you get any type of sticky residue in the glass, is to stab your sponge with a fork and use the fork the push the sponge down, twisting it around the inside bottom part of the glass until it comes clean.