In the summer months and early fall the 20 degree bag is too much. The KSB 35 DOWN is an incredible bag that packs easily and is super comfortable. Still providing exceptional warmth but giving you the window between about 20 & 40 degrees.
Backpacking for me has typically been switching between a 0 degree and a 20 degree sleeping bag. I will end up unzipping the 20 degree bag all the way and then trying to find the balance between no cover and overheating. With the KSB 35 DOWN temperature balance is covered. This sleeping bag is super soft and comfortable. When the cooler nights set in this still is a roomy sleeping bag with everything you need without the weight.
The KSB 35 DOWN is a very versatile bag that can be adjusted to fit your needs. This bag features Length Locks that can shorten the bag, and a two-way zipper that allows you to open the foot box for ventilation or stand up in the bag. The KSB 35 DOWN has a full length zipper to open the bag all the way and convert it into a blanket. If you decide to use it as a blanket get the KLYMIT STATIC V with the V sheet. Then you will be on a sheet and not directly on the pad. I did this just last weekend and I was very comfortable in 60-70 degree evening temps. See our review of the V sheet:
The KLYMIT KSB 35 DOWN sleeping bag comes with 2 stuff sacks. One as seen below & the net larger size for ventilated storage. This sleeping bag is a perfect addition to your sleeping bag quiver. Check out other offerings @ https://www.klymit.com/ksb-35-down