How to wash these?

Anything new I wash in cold water with light detergent and a cup of white vinegar. Vinegar will set the color so it won't bleed. Tumble on low heat. After a few washings you can up it to warm water without fear of shrinkage.

I think the temperature doesn't so much matter if it's just cotton sheets, but you do want to wash them alone the first time. I know I've had blankets like sheep type that the first wash was I believe cold and the rest warmer water. http://www.realsimple.com/home-organizing/cleaning/laundry/wash-your-sheets-10000000684315/ That is a link to tips on washing sheets.

I would wash the new sheets in warm water, with your usual detergents, etc. before you actually use them. This gets any leftover dye or other chemicals out. I would dry on a medium heat. Same for the comforter. I never use hot on anything except white cleaning rags or white dish rags. I will have to look around and see if you told us what color they are or anything.

I think I would wash it by itself in cold water. That way it will not shrink but stay it's original size. I hope that you like your new set and that it stays as it is.

I wash in cold water. It should say on a tag how to wash. It does on the ones I buy.

I used to handwash our comforters. And we don't have a dryer so they get sun dried. But now I have them laundered by a dry cleaning service. I don't know what they do to it but it's always fluffier. I find it expensive but sometimes I feel it's worth one hassle-free day. And sometimes I feel guilty. But I'm getting so many tips here. Next time I might try using warm water. And maybe they really need to be tumbled dry in high heat so they get fluffy.

I always wash them in cold water and then tumble dry low. If you do it on hot heat it will shrink up. Or you could always go to the laundromat and wash them in the big washers there so they don't ruin. I do that sometimes too. Good luck

All of my sheets say to wash in warm water. Most of these sheets are 500 to 600 thread count. I wouldn't wash them in hot water because they could definitely shrink or depending on the quality the dye could run. I would wash the sheets separate from the comforter for sure unless you have a washer that can hold a big bulky comforter and sheets, I don't have a big enough washer for all of that at one time.

I don't know of what kind of cloth/material your new sheets are made of. Mostly new ones you only need to wash once in lukewarm water. Same with new towels. If the water is lukewarm it won't shrunk. Only sheets made of 100% cotton are able to shrunk but only if the water temp is too high. But I wonder if there are still sheets made that way. Most sheets you don't need to iron anymore if you hang them out in the right way, which means they "changed"/prepared the cloth or it's not 100% cotton anymore.