I bought this light weight comforter insert to use in the summer.  I bought the king size to fit into my king size duvet cover.  It's significantly smaller.  So the comforter is always shifting around inside the duvet and I haven't had the time to sew in some corner ties or buttons. 

Overall it's simply okay.  The fabric is soft and I do like the box construction.  The fill weight (lighter) is great for use during the hot summer months in Vermont.    

Pros: Light weight for summer.  Cotton Cover.
Cons: Does not fit into King Size Duvet cover.