With the squared off tails these are perfect for wearing outside your pants, not tucked in. I bought four, one of each color.  They're generously cut across the upper back, not binding when you have to bend over and reach for something with both hands. Very soft and comfortable and nice and warm. As do all cotton flannel shirts, they shrank a bit when first washed and dried, so if you're between sizes, go to the next larger size.