I recieved Hammock Gear Phoenix 20* UQ for Christmas. I have now used it 3 times on a HH Ultralite. I do not need to talk on the craftsmanship of the quilt that has already been dicussed multiple times. I want everyone to know it works great on my HH. I have had no issues with slippage, air gaps, or any of the other possible concerns. I have slept comfortable to 35* so far. Hammock Gear makes an excellent UQ and you will not be disappointed in getting one.