I have worn Motherhood's nylons during all of my four pregnancies over the last seven years. I feel that over that time their quality has diminished to that of factory seconds.  Just in the last week, I have run (no pun intended) into multiple problems with Motherhood's nylons (both lycra sheer and compression styles).

Lycra Sheer--  First, they seem much thiner and more itchy than they had been before (even realizing that "sheer nylons" means thin).  I had the same issue as another reviewer, a small pull right out of the package.  However, the pull in my nylons DID result in a run, straight up the side of my leg.  This was only the second time that I had worn that pair.  I ran upstairs to change them before work and had my second problem.
Unfortunately, I had not noticed that problem until I was at work.  Upon looking down at my feet I noticed that the reinforced toe on my left foot rose up close to three inches from my toe, while the right foot only came up about 1/2 that!  I was wearing Mary-Jane style heels and the reinforced line on the left almost hit the strap of the shoe on the top of my foot!!

I called the store where I purchased them from with my concerns. They were very apologetic and, despite a strict return policy, said that they would return or replace them for me.  I feel bad complaining to the store when my issues are with the companies quality control.