It fools the older people in the family, but my kids, neices and nephews look at it and just know that something isn't right about it.  I really don't know how long they will last.  Doesn't feel to be the best quality material used.  Wish they were thicker cotton.  I have t-shirts with better material that these, but I've been wearing them for the last 3 nights, and they are comfy.  But like I said, not sure how long they'll last...