I bought this bag for a four night hut trip knowing it would be a summer trip bag too. I have a 20° Marmot semi rectangular bag that I've used in the past but it was warmer than necessary and bulky in the pack. The MityLite was warm enough to sleep in boxers and my Patagonia Capilene lightweight base layer. I would guess the bunk room got down to 45-50°F at night. A fleece layer or socks was too much for me. The MityLite was about half the weight (better quality down+higher temp rating) and fit into a Sea-to-Summit XS Event compression dry sack, though I did eventually up-size to the small bag for ease of stuffing. My Marmot bag requires a medium and that's a tough squeeze. Anyway, I have plans to use this bag for summer backpacking, future hut trips, trekking in the French Alps, and who knows what other adventures.
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