It's always fun talking to Tim Marshall about quilts. I was testing a pre-production model of his Enigma and chatting with him about it, my thoughts, how it had performed for me, etc. I mentioned that the one thing seemingly missing from the market was a quilt system - where pieces were made to work together so that a couple of quilts could cover a wide range of temps. I had recently read one of the many threads on BPL about combining bags for lower temps, but there was a side concern about compressing the down in one, which would limit effectiveness.
Tim thought about this and then came up with a quilt system that would work together for a wide range of temps. There are three pieces to the system (my choice of temp quilts) - a 50 degree quilt, a 30 degree quilt and a cuben quilt liner. All pieces have snaps (though Tim might change snaps to straps or buckles if he goes into production with these) and are cut so that any two, or all three, can be combined and will stay together when tossing and turning at night. So the cuben liner will snap into either quilt, and the 50 degree quilt will snap into the 30 degree quilt. The 50 degree quilt is regular width, the 30 is wide.
So, it's gonna get around 40 degrees? Take the 50 and the cuben liner. Etc. The nice thing about the pieces actually snapping together is not only that they'll stay together if tossing and turning, as mentioned above, but you can slip your down jacket between the cuben liner and the quilt and it'll stay put instead of falling out one side or the other.
Tim really outdid himself with this system. Very high quality, as you'd expect. I ordered down in both quilts (the 850 Downtek). Can't wait to test it out (though that'll have to be January at the GGG, unfortunately, can't get out before then).
The three pieces side by side
A closeup of the double snap on the 50 degree quilt. It'll snap to the 30 degree quilt, and the cuben liner will snap to it, all at the same time.
Closeup of the snaps with the 50 degree quilt inside the 30 degree quilt. You can also see the buckles for Tim's strap system to attach the quilt to your pad, if you so desire.
The 50 degree quilt inside the 30 degree quilt. Perfect fit!
It's a great looking system, and just seems to make so much sense to me. For a few extra grams you have a system that truly fits and stays together and should cover from 60 degrees to 10 degrees, I'd think (though you engineer/math folks should feel welcome to contradict that since I don't do math about how cold I could take it if all 3 pieces were used together). The three pieces together weigh about 28 ounces.