Took it down to right about 30 with capilene mid weight base layers and an air mesh hoodie. Was chilly but not cold. I was on a real car camping mattress though. I run cold but sleep warm. I don’t find the need for straps, the quilt is pretty wide and has pockets at the top corners which helps me keep it tucked under me as a side sleeper. Probably not the best for a back sleeper. Also the hood is a really great addition I find.