Marmot Trestles Sleeping Bag

The Trestles is rated for 15°F, making it a solid choice for late autumn or early spring trips. While it is technically a 3-season bag, it may not provide enough warmth for deep winter conditions or sub-zero temperatures.

This bag features a cut that is slightly narrower in the shoulders and wider in the hips, along with additional insulation in key areas like the core and footbox to account for differences in heat retention.

Yes, the SpiraFil synthetic insulation is specifically designed to retain its loft and warmth even when damp. It is a much more reliable choice than down if you are camping in humid or unpredictable backcountry conditions.

The secondary zipper allows you to fold down the top of the bag like a blanket, providing extra ventilation on warmer nights or making it easier to get in and out of the bag without unzipping the entire length.

At 4.5 lbs, this bag is on the heavier side for ultralight backpacking. It is best suited for shorter treks, car camping, or situations where durability and warmth are more critical than shaving every possible ounce.

Yes, the anatomically designed 3D footbox is shaped to follow the natural position of your feet while you sleep. This prevents the insulation from being compressed and gives you more space to move compared to a traditional, tapered mummy bag.