Instruction: Answer the given question using the supporting document.

Input:
Question: Can you put them in the dishwasher or need to wash them by hand?
Document: Very good for use on the patio or by the pool but compared to some others my husband bought these are really plasticky and kind of soft and pliable. You need to wash by hand or you will get some interesting dents or shapes depending on the dishwasher setting.
Need a reusable, unbreakable, wine glass for your patio, party, boat, or pool? Want the wine to taste good? Can except this provides enough convince to overcome the fact that you can't put it in the dishwasher? This is the glass! Thin enough to allow the wine to taste like it should. Has a thumb slot so it won't slip from your hand. We have been using these for years and love them.
I am not impressed with these glasses. They are very thin and lightweight, and don't feel like they will last at all. They are hand wash only, not sturdy enough for the dishwasher. According to the packaging, they should be considered a "disposable" cup. I wish I had researched them further, because it is definitely not what I had in mind.They are a good size, and I like the thumb spot, but they need to be heavier and more solid.
These plastic glassesare fine if you plan to wash them by hand, but if you put them in the dishwasher they will warp. Had to toss them.
I put mine in the dishwasher top shelf and they warped. I should have been a better shopper and read the reviews. Hand wash recommended did not give me a clue.
These glasses are the best! Plastic with a little grove to put your finger in so it doesn't slip out of your hand. Easy to wash up by hand (don't put them in the dishwasher, I think it would ruin them). Was given one as a gift and had to have more. Will be giving them as presents for Christmas.
These are really nice for a plastic wine glass the only thing I did not like is the fact that the package said hand wash recommended but the box of the glasses said hand wash only so I put 2 in the dishwasher and they came out mis-shaped. They would be really nice if they could be put in the dishwasher.
Second time I've purchased these glasses. Bought some for myself a few months ago, and bought these as a gift. Great for poolside or picnics, although I often use them indoors as well. I always get comments about them. Based on other reviews, I do not put these in the dishwasher. Worth the extra effort to hand wash.
Four nice tasting type 'glasses' for $12.95, great for outdoors events.I don't get why people are knocking them down because they couldn't read, and put them in the dishwasher. Yep they will melt or get hazed, hence the hand wash directions. It clearly states they are hand wash, heck it's even imprinted on the cups, it's not rocket science people, just RTFM and life is good.
This is absolutely without a doubt the best of both worlds. I have a personal policy to not drink wine from plastic. But when I found these I made an exception to that rule. They feel just like my favorite wine glass, and look like glass, but they are a super durable plastic that you can hand wash and use over and over again. You don't want to put your Govino's in the dishwasher or they'll melt. I love serving smoothies in them and ice cream floats.
Answer: I wash them by hand.  They are very thin and I would worry about scratches and shape distortion by the hot water.