I ordered a sheet set from these guys 2 years ago which has been our regular 4 piece set of sheets. My hubby practically refuses to sleep on anything else so I figured it was time to get a back up set. I did not know they had doona covers as well so this time I added it to my order. The first night we slept in it I finally understood how much I was missing out having linen underneath as well as on top of me. I didn't mention it to my husband but as he was getting ready for work he mentioned how much he enjoyed his sleep 2 or 3 times. I wanted to understand why being covered in linen made such a huge difference to our sleep comfort. When I googled ‘linen sleep health' the flaxlinen.com blog came up speaking of the health virtues of sleeping in linen. I am paraphrasing the blog basically said when you wrap yourself in linen because of the breathability of the fabric, not air pockets are formed and your body temp regulates faster. Makes sense to me, don't let my husband catch us without being wrapped in linen