I have really bad allergies that I deal with on a daily basis. Fortunately, after purchasing so many different protectors over the years I’ve finally found the one that really works for me. It has made a HUGE difference in the quality of my sleep and the added protection against bed bugs and dust mites really makes it a worthwhile purchase. Once I zipped it over the mattress all of my sheets fit normally and didn’t add any bulkiness to my bed.Couldn’t be happier!