Sinfonia yarn - anyone familiar with it?

I made it to a Hobby Lobby today and picked up some 100% mercerized cotton yarn for a chemo hat. This project is hard. I’d been reading labels and thought I got one that’s machine washable and I just looked and the label for this one says hand wash. If it makes it into the washing machine will it be ruined? I don’t want to give her a hat and have her crying because it gets washed and dried by mistake. I’ll try researching but if anyone tell me anything, I’d really appreciate it. Thanks.

I read the label again (such small print!) and it can machine wash, cold water, but no dryer. I may need to try for other yarn.