These shirts are great, and I have been wearing them for many years. They are very warm, comfortable and durable. I wear them most days during cold weather. I prefer the mock turtleneck to a regular turtleneck.
I'm returning this item I bought for my husband because the neck comes up way too high for a mock turtle. He finds that constricting and it's why he doesn't wear regular turtlenecks. Otherwise, the quality and the color were fine.