Confused-Looking for info on Hypoallergenic bedding? I'm looking for waterproof and hypoallergenic protective pillow covers. I also want...

I'm looking for waterproof and hypoallergenic protective pillow covers. I also want some just hypo. There are heaps very expensive ones but I found a website that has some discounted ones but in that are lots of choices of materials.terry cotton,tricot,poly cotton with membrane and stretch knit with membrane...AAHHH! Anyone own any clue? Also.does anyone know if the "always fresh" treatment tha tis on many covers is safe and sound? It sounds like a lot of chemicals to me.Thanks within advance.
Answers:    I would go next to the "cotton with membrane" choice.
Once you wash it (before you use it) I'm sure doesn`t matter what they treat it with will be washed away.

Try this site to find even bigger discounts:
http://www.overstock.com

I bought two and am incredibly satisfied.