I echo what others have said. I am admittedly a cold sleeper. I have an EE Revelation 20. I trust that rating, but for it to work at 20° for me, I use a silk liner and an X-Therm pad (amazing!) and wear multiple layers including my EE Torrid hoodie (also amazing) and a Smartwool beanie. I think the liner alone adds 10 degrees of warmth, not to mention it keeps the quilt much cleaner. Cozy warmth at night makes my whole next day a lot more pleasant too.?