These sheets appear to be constructed well. The elastic on the edges is tight and it fits a normal size crib mattress perfectly. I have run them through the wash several times and so far they are holding up well so I feel they should last a while. The colors are white and grey so they will work for both boys and girls. The designs are also gender neutral which I really like.
After washing I didn't notice any stiffness or loss of the softness. I was afraid that since they are cotton, that they would shrink, but that didn't happen either. They still fit the mattress fine and feel as good as new.
You can get these here on Amazon.
Have a great day!