I sprawl when I sleep so I have never been too comfortable in mummy bags. This quilt is a game changer. I got the wide version for only a small weight penalty and paired with a therm a rest neo air, my sleep has improved dramatically. The 30 degree bag is plenty warm for 3 seasons even without wearing extra layers. Cannot recommend highly enough. You won't regret buying it.
40 degree just barely enough for me for a western mountain summer bag
Have had this quilt for a month now, slept in for prolly 20 nights, from California high Sierras, to Montana mid-mountains to a bike tour in Quebec. Saved a few bucks buying it on a 4th of July sale.
I LOVE the quilt idea--I've used my Feather Friends 20 degree sleeping bag as an XXwide quilt for 25 years, almost never sleeping in it zipped up, just spreading it over me. This EE quilt trims that idea down to perfection.
I'm 6'2", bought a 40 degree, long, wide, and consider it the perfect size and weight* for a summer quilt.
On 40 degree nights in the Sierras I had to put on my puffy coat, then slept fine. I'd be apprehensive to use it in temps near freezing (but it should make a toasty innerquilt for my older 'quilt').
*My 5' 4" wife bought the medium/wide 30 degree version--and if I were to buy a new 'summer' quilt for myself again, I'd probably get a 30 degree version as well, just so I could expect it to last for a decade, a be a bit warmer on chilly high-mountain nights. My 40 degree quilt felt like just barely enough--and I worry that in a year or two it'll feel too thin. The weight/packed size difference between our two quilts is negligible.
Overall: excellent quality, and wonderfully light. Plus, fast shipping, great service, etc.