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The Light Year Series offers an authentic feature-rich multi-day backpacking sleeping
bag at an incredible value. Starting with construction, the Light Year Down 20 has an
EN limit of 25 degrees, which we achieved by using a slant, baffled construction and
600-fill power goose down. This twenty-degree bag also includes a full collar baffle and
a zipper draft tube, which keep you warm and eliminates drafts and heat loss. The 58-inch
zipper uses a locking slider that keeps the zipper in place so your bag doesn't open in
the middle of the night. It also has sliders at both ends so you can self-regulate the
temperature within your bag. More exciting features include a zippered chest pocket to
keep valuable warm and close at hand, sleeping pad security loops to ensure your bag stays
put through the night, and internal liner loops to help secure an extra layer for added
warmth or to help keep your bag clean. Finally all of our Light Year bags include a storage
sack which preserves your bag and a lightweight compression stuff sack helping to keep your
bag as small as possible within your pack.