The Marmot Women's Trestles 15 Sleeping Bag offers superb value with its toasty warmth and comfort-oriented shape. Its affordable price point sure doesn't hurt either, leaving plenty of extra loot for far-flung trips into the mountains. SpiraFil LT insulation traps thermal warmth with its high-loft synthetic fibers, ensuring you're sleeping soundly when the mercury plunges on crisp, clear evenings.
Newly improved over previous versions, the anatomical, 3D-shaped footbox improves warmth and roominess for your feet. Although it's rated to 15 degrees, the Women's Trestle 15 is actually a bit warmer than the men's-specific version, as backed by its EN Comfort rating of 16 degrees (versus the men's version with an EN Comfort rating of 27 degrees). Marmot does this because female campers usually sleep colder than their male counterparts, so a bit of extra insulation does wonders to boost overnight comfort in cold weather. On those especially frigid evenings, the adjustable collar and hood lock in precious body heat from escaping.
There's also a second fold-down zipper, should you feel overly warm on mild summer nights.