I supply 4 pillows on my double and kingsize beds. They are all sleepable on, so all get washed and ironed. I have some decorative pillows that I assume people will use to prop themselves up if they are watching tv in bed, they don’r get washed quite as much, but they would be horrible to sleep on. I think a sham is a American thing, cross between a bed pillow and a decorative pillow. I would not use them, as if you only supply 2 sleeping pillows, people will use the shams.