You asked for it and now it’s here - a 100% pure muslin cotton duvet cover! Made of the same luxurious breathable muslin you know and love to keep you cozy (not sweaty) by providing a breathable layer between your body and the duvet insert. Ties on the inside prevent the insert from slipping and a zipper closure (because life is too short for buttons)!Each section of the duvet cover consists of 4 layers for a total of 8 layers combined, giving you the same benefit of the 365 Blanket, in addition to also being able to add an insert of your choice.  OEKO-TEX certified 100% pure cotton muslin. Pre-shrunk. Laundry tip: We do NOT recommend using fabric softener, dryer sheets, or chemical based detergents as they can cause the blanket to get hard and stiff from the chemicals. We pre-wash all our products in Bio Brite, our specially created, 100% natural, non-toxic detergent/spot treater.  Traditional sizing. This one is NOT oversized but rather made to fit traditional duvet inserts.King: 108" x 96"  Queen/Full: 90" x 96"  Twin: 70" x 90" *PLEASE NOTE: Everything is preshrunk, but due to its waffle weave, the sizing is not absolute and may vary slightly from piece to piece. Due to the all-natural cotton fibers, coloring may vary slightly from piece to piece. Because it is 100% cotton, some minor pilling may occur. Product colors may very depending on monitor and phone settings as well as calibration.