I didn't need a pkg of 6 case covers, but I'm so glad to have extras on hand. These are extra-fine quality, thick enough, smooth zippers, perfect fit for my standard pillows, and I've even washed one pair already just to test it and it only got better. I'm so glad I found these on Overstock. Don't let your pillows get that ugly yellow stain, cover them right away - cover them twice if need be - you have extras to put to good use. This is a great deal.