Marmot Trestles 15.
SpiraFil synthetic insulation in a roomy mummy cut rated to 15°F. Wet-weather reliable because synthetic doesn't lose loft when damp.
This product is discontinued. Marmot Trestles 15 is no longer actively ranked on Gavler. See the current Best Backpacking Sleeping Bags list for up-to-date alternatives.
View current Best Backpacking Sleeping BagsThe Verdict.
Gavler Meta-Score
“A warm, exceptionally well-ventilated synthetic bag at a budget price — the twin-zipper design is genuinely useful and the SpiraFil fill laughs at damp nights. The catch is size and weight: OutdoorGearLab clocked it at 58 ounces and bulky, so treat it as a reliable car-camping and short-trip bag rather than an ultralight backcountry pick.”
The Gavler Verdict
Precision Engineering
Dual-Zipper Ventilation
A full-length plus a quarter-length zipper give unusually versatile airflow — vent your core, sit up, or reach out without unzipping the whole bag.
SpiraFil Synthetic Insulation
Short-staple synthetic fill retains warmth when damp, the practical choice for wet climates where down loses loft.
Generous Cut + Best-in-Test Compression Sack
Room for layers on cold nights, plus an included compression sack OutdoorGearLab rated the best of any bag it tested.
Technical Specifications
The Scoreboard
OutdoorGearLab rates it the second-warmest synthetic bag it tested and praises its two-zipper ventilation and included compression sack, while flagging it as heavy (58 oz) and bulky — the reason its editorial score trails lighter picks even as budget buyers rate the value highly.
Vote on the current list
Marmot Trestles 15 is discontinued, but you can still shape the rankings in Best Backpacking Sleeping Bags.
Global Critique
“The Marmot Trestles 15 is the second warmest synthetic bag tested.”
“In warmer weather the Trestles provides unmatched ventilation; it has two zippers (one full length and another quarter length).”
“It weighs 58 ounces, making it the second heaviest bag in its class, and takes up a colossal amount of space even when packed in a compression sack.”
“The compression stuff sack included with the Trestles bag was our favorite of all the bags tested in this category.”
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