My reason for buying these pillows is because of the reviews I'd read about the great neck support. I had expected 100% down when reading the description "Luxury Soft Goose Down Pillows (Set of 2) ". I was disappointed when, in reading the contents tag, they were only "minimum 75% down". I knew the feathers would make the pillow 'harder' instead of soft, as I had expected. Upon taking them out of the box, it took only two hours for them to fluff up to full size. And they were 'full' size. Definately 550 fill and I was very pleased with that. The pillows are great for those who sleep on their side. Apparently am a 'back' sleeper and the pillows pushed head too far forward. This morning I awoke with my neck really hurting.They are great pillows if you like fluffy and very full pillows. If you like soft and mallable pillows, these are not for you.