Nice tight weave to these great sheets. I use them year round and here's why that works. During the warm months, you won't need to use any blanket with them as the sheets alone are a very lightweight cover. In the cooler, months, when you layer with blankets, they insulate and provide the great warmth you want from flannel.
I have a queen size bed. The last set of flannel sheets I had were not of this high quality. They shrank to a double-bed size. Because I wrongly assumed all flannel sheets do this, I ordered the king size German Luxury Stripe Print and washed them a couple of times, putting them in the dryer each time assuming there would be the unusual shrinkage. I was wrong. I just tuck the extra fitted sheet under the top mattress. (It doesn't pull back out because it's flannel.) On the plus side, I like that the top sheet comes down much further on the sides of the bed! I haven't decided whether to order another king-size or buy the queen in my next order.
No pilling experienced with these high quality sheets.