This is a like new condition all cotton twin size Pottery Barn PB Teen navy and white zig zag duvet cover (only -- no inner liner included).  Top side is bunched and bottom side is flat -- button closure.  There are interior ties for the comforter insert.  I also have a PB Teen inner liner for this twin, but it is not included -- let me know if interested.  I also have a matching queen duvet and sham (not included here) and can group all together if interested in any grouping.  See my separate listing for the queen and my flannel sheets!