>>2450863>I find the underquilt is easier to take above temp rating than the the top.Yeah that's why I decided to get a 0 degree underquilt for 4 seasons. I was recommended a great way of venting the wooki in the summer. You attach shock cord to the ridgeline at the foot end and attach a prusik to the carabiner on the underquilt. You can then use the prussik to slide the underquilt down to any desired length depending on the temperature. I got a 10 degree topquilt that should be pretty easy to stay at a comfortable temperature in year round. I'm gonna get an underquilt protector for really cold conditions.