Instruction: Answer the given question by extracting information from the supporting document.

Input:
Question: Can these be kept in the freezer?
Document: I always kept them in the freezer door. I bought them 10 years ago, and have no idea what happened to them all. But they were my favorite glasses to pull out on a hot afternoon. Not the best I'm sure, but great classic old mug style.
I have had these beer mugs for about 8-10 months now and each mug has been through the dishwasher at least 20 times. They have kept many a beer cold a bit longer than normal for me. I keep them in my freezer door in preparation of use, and they are so thick there have not been any cracks in the glass, just a nice icy glaze.
I ordered these mugs for my boyfriend as a partial Christmas gift. I was a little nervous about the purchase because I could not judge the weight of them, but I took a chance.Boy am I glad I did! They are nice and sturdy, well made, and a definite asset. They are kept in the freezer so he or company can have a nice, frosty mug of beer any time.
Hubby was looking for some glasses that kept his drinks cold. After using it I realized he might need those mugs with the freezer gel in them. Very good quality heavy mugs for the price. I place them in the freezer and the keep cold drinks cold for a good amount of time but do not cool room temp. glasses like he wanted (he wants an ice cube replacement). Still, great mugs.
I've looked for a sturdy mug to put in the freezer for 10 years before it finally occurred to me to look on Amazon. I've been thrilled with these so far and have kept one in the freezer every day since they arrived. They keep beverages cold without ice (which waters them down) and best yet, when used for root beer floats, they keep the root beer and ice cream so cold it takes on the consistency of a slushee. I couldn't be happier.
Keep these in your freezer, a chilled glass is amazing to have when you need to pour yourself a drink!
Bought as a gift. They loved them! Especially after placing in the freezer for a chilled drink!
Heavy and thick, I put them in the freezer and use them with my beers. I plan on buying more of these.
Awesome mugs for the price!! you can put them on the freezer and they work perfect!! Love this product!! Recomendable
Of course, I keep these in the freezer for and extra cold beer on a hot afternoon or evening. Duh!! !
Answer: I have never put them in the freezer but they are thick mugs so the cold shouldn't harm them