Great but not perfect.
These layering adapters do exactly as advertised, and for that I'm thankful. They hold my quilts together well for some comfortable cold night sleeping. However, nothing is perfect. More plastic means more plastic to avoid sleeping on top of. More room between buckles means you can't cinch the quilts as tightly as normal (I'm one who likes to make the edges of the quilt touch to avoid maximum drafts). All that said, I'm really thankful for them and look forward to using them on some upcoming winter trips.