You traveled to Alaska in search of unspoiled fishing, northern lights viewing, and teeming wildlife up close. Stay warm on those endless summer nights above the 50th parallel with The North Face Women's Aleutian 20 Degree Sleeping Bag. This toasty sleeping bag wraps you in cocoon-like warmth when the temperature dips below freezing on northern evenings. Heatseeker Eco synthetic insulation maintains lofty warmth without succumbing to wet conditions like its down counterparts. Its semi-rectangular shape and wraparound footbox increase roominess, so you're not tossing and turning all night. And for warmer summer nights, the shorter side zipper allows you to fold it into a blanket.