Yes, it can shrink. I usually wash my items like this in cold water and lay flat to dry. Answer 2
Make sure you desize any new garment by washing in cold wash first.
Cotton is more natural then polyester so it stretches and shrinks easily. Whereas polyester shrivels at about 80 c. Since it is mostly cotton it shouldn't shrink as the polyester will keep it from stretching. I'd make sure the water temp is about 40 - 50c.Answer 3
Its possible it will shrink a little bit but it won't shrink very much. Don't wash in hot water or dry in a hot dryer and you should be fine. Dry in the dryer on a low setting and unless its really dirty wash in cold water on gentle. Answer 4
80% cotton will shrink.Answer 5
It won't shrink if you hand wash it.