I have used pyrex toys for years. I was sent a few of them for demo from a website when they first came out and they are still some of my favs. Best thing about pyrex is you can throw them in the dishwasher if you're lazy (not that I have.. I just know you can), they are VERY safe when it comes to fluid exchange ( they are nonpourous so thier more sanitary then lots of other toys) , they don't bleed on other toys and don't get bled on and frankly thier rock hard everytime you need them to be.
XOXOXO,
*KK*