The Big Agnes McKinnis Sleeping Bag Liner is extra warmth for travel or boosting your sleeping bag out in the field. The 650 fill DownTek™ is a water repellent down insulation, adding just a little extra heat to a chilly night. Whether it's summer and you're using it alone or in colder temps and you're pairing it with your sleeping bag. At just 1lb, it stuffs into it's own included stuff sack and won't weigh down your travel bag or hiking pack.
So sorry, but only 4 items are allowed for comparison, so we're comparing the first 4. I blame the gnomes and so should you.
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