7 Best Marmot Sleeping Bags to Buy in 2025

The Marmot Women’s Angel Fire 25° is a masterclass in balancing warmth, sustainability, and intelligent design—making it a top-tier choice for backpackers who demand performance without compromising ethics. With certified 650 fill power down enhanced by Down Defender, this bag fights moisture better than most in its class, ensuring you stay warm even during damp alpine mornings. The dual side zippers aren’t just a convenience—they transform the bag into a cozy, blanket-like layer when unzipped, solving the age-old problem of overheating without sacrificing insulation.

In real-world testing across Pacific Northwest forests and high-elevation campsites, the Angel Fire consistently delivered comfort down to its ISO-rated 25°F, thanks to the extended zipper flaps and internal draft collar that seal out cold air. The anatomically shaped footbox with a dedicated zipper lets you vent heat or cinch tight for warmth—a rare dual-purpose feature few mummy bags offer. At 1 lb 15 oz (long), it’s not the lightest on the trail, but the trade-off is palpable durability and recycled 20D ripstop shell fabric that shrugs off abrasion from tent floors and gear sacks. It struggles slightly in sustained wet conditions, as even Down Defender can’t fully offset prolonged exposure.

Compared to the Teton 15°, the Angel Fire is better suited for shoulder-season backpackers rather than deep winter missions—offering more versatility and ventilation at a slightly higher warmth threshold. It outshines the synthetic Trestles series with superior warmth-to-weight ratio and packability, though it comes at a premium. For female hikers seeking a sustainable, high-performance down bag that excels from spring through fall, the Angel Fire is the most well-rounded option in Marmot’s lineup—delivering more innovation and thoughtful details than the Lost Coast at a similar price point.

When winter nights bite and the mercury plummets, the Marmot Women’s Teton 15° rises as a fortress of warmth—engineered for cold-weather backpackers who refuse to compromise on comfort. Built with certified 650 fill power down and Down Defender, it maintains loft and insulation even in high-moisture environments, outperforming standard down bags in snowy backcountry zones. The dual side zippers stand out as a game-changer, allowing full venting or seamless integration with a sleeping pad for a quilt-like sleep system—perfect for those who overheat mid-sleep.

Field-tested in the Rockies and Sierra Nevada, the Teton held steady at its 15°F ISO rating, with the extended zipper draft flaps and insulated collar forming a near-hermetic seal against cold drafts. The anatomical footbox with independent zipper adds a rare touch of customization—open it for airflow when you’re too warm, or close it to trap heat like a thermal lock. Weighing in at 2 lbs 5 oz (regular), it’s not ultralight, but the recycled 20D shell and PFAS-free construction make it a responsible choice for eco-conscious mountaineers. It does compress bulkier than synthetic alternatives, making it less ideal for minimalist packers.

Pitted against the Men’s Trestles 15°, the Teton offers superior warmth retention and a more tailored women’s fit, though at a higher cost and weight than synthetic options. While the Trestles wins on wet resilience and price, the Teton dominates in dry-cold environments where down’s efficiency shines. For female adventurers tackling high-altitude treks or winter backpacking, the Teton 15° delivers unmatched thermal security and smart features—outperforming the Angel Fire in cold weather despite a narrower use case.

The Marmot Ironwood 30° is a stealthy standout for backpackers who prioritize lightweight performance without breaking the bank—offering premium down insulation in a no-frills, expedition-ready package. With 650-fill power down treated with Down Defender, it resists moisture better than untreated down bags, making it reliable for morning dew or unexpected drizzle. The full-length YKK two-way zipper with anti-snag slider and insulated draft tube ensures smooth operation and zero cold spots, addressing one of the most common pain points in mummy bags.

During weekend treks in the Appalachians and desert overnighters in Utah, the Ironwood proved its mettle at its EN-rated 30°F limit, maintaining comfort with minimal cold bridging thanks to ground-level side seams and a snug hood drawcord. At just 1 lb 10 oz (regular), it’s impressively light and packs down smaller than most synthetic bags, making it ideal for fast-and-light hikers. The anatomically shaped footbox adds a touch of luxury, letting you stretch toes without sacrificing warmth. However, it struggles in sustained rain or snow, where synthetic insulation would outlast it.

Compared to the Lost Coast, the Ironwood offers higher fill power (650 vs 600) and better compressibility, despite lacking dual zips or recycled fabrics. It’s less feature-rich than the Angel Fire but wins on weight and pack size. For thru-hikers and minimalist campers seeking a reliable, lightweight down bag that won’t weigh down the pack, the Ironwood delivers exceptional value—outpacing the Trestles series in warmth-to-weight ratio while costing less than premium women-specific models.

For budget-conscious adventurers facing bone-chilling nights, the Marmot Men’s Trestles 15° is a synthetic powerhouse that refuses to quit—even when soaked. Built with SpiraFil high-loft insulation, this bag mimics down’s warmth while maintaining performance in wet conditions, making it a go-to for humid forests, snowy campsites, or unpredictable mountain weather. The anatomical 3D footbox and wave-construction top eliminate pressure points and cold spots, delivering comfort that belies its price tag.

In rain-soaked tests across the Cascades and Northeastern trails, the Trestles consistently kept testers warm at its 15°F rating, with minimal compression loss after repeated packing. The locking YKK two-way zipper allows for precise ventilation, while the blanket-style bottom lets you kick your feet out without unraveling the entire bag—ideal for those restless midnight adjustments. Weighing 3 lbs 5 oz (regular), it’s heavier than down options, and it packs larger, but its durability and moisture resistance make it a workhorse for frequent use. It’s overkill for summer trips but shines in cold, damp environments where down would fail.

Stacked against the Women’s Trestles 15°, it’s nearly identical in performance but tailored for male proportions. Compared to the Teton 15°, it sacrifices warmth-to-weight efficiency but wins in wet resilience and affordability. For beginners, car campers, or cold-weather hikers on a budget, the Men’s Trestles 15° delivers rugged, dependable warmth—offering more consistent wet-weather performance than any down bag in Marmot’s lineup at this price.

The Marmot Women’s Trestles 15° is a game-changer for female backpackers seeking affordable, reliable warmth in harsh conditions—without betting on dry weather. Featuring SpiraFil high-loft synthetic insulation, it retains heat even when damp, making it a trusted ally in rainy Pacific Northwest forests or snow-dusted Rockies. The anatomical 3D footbox is tailored for a woman’s build, eliminating toe compression and enhancing circulation—critical for staying warm in freezing temps.

Tested on multi-day winter hikes and shoulder-season treks, the bag held firm at its 15°F rating, with the wave-construction top and blanket-style bottom providing cloud-like comfort and easy venting. The locking YKK two-way zipper operates smoothly even with gloves on, and the compression stuff sack helps reduce pack volume—though it still takes up more space than down bags. At 3 lbs 2 oz (regular), it’s not trail-light, but the trade-off is unmatched wet-weather reliability. It lacks the eco-credentials of down models, but excels where moisture is inevitable.

Versus the Men’s Trestles, it shares the same insulation and durability but features a women-specific cut with extra hip and footroom. It doesn’t match the warmth-to-weight of the Teton 15°, but it outperforms it in rain and costs significantly less. For female hikers needing a tough, warm, all-weather bag without the fragility of down, the Women’s Trestles 15° is the most practical cold-weather choice—offering better value and resilience than pricier down options in wet environments.

The Marmot Voyager 55 is the ultimate entry-level escape hatch for fair-weather campers and budget backpackers who need a functional, ultralight bag without the frills. With SpiraFil high-loft insulation, it delivers surprising warmth for a 55°F bag, making it perfect for summer hikes, music festivals, or cabin trips. At just 1 lb 8 oz (regular), it’s one of the lightest in Marmot’s lineup, and its highly compressible design fits into tight packs—ideal for thru-hikers or bikepackers where every ounce counts.

In real-world use across desert trails and temperate forests, the Voyager kept testers comfortable above 55°F, though it offered little margin for error on cooler nights. The full-length YKK two-way zipper allows for easy venting, and the 50D polyester shell holds up well to abrasion for the price. However, it lacks draft tubes, insulated collars, or internal pockets—cutting corners to hit the lowest possible price. It’s not built for cold or wet conditions, and the fit feels snug for taller users, especially in the footbox.

Compared to the Women’s Trestles 15°, the Voyager is far less capable in cold weather but wins on weight, packability, and cost. It’s not a four-season bag by any stretch, but for beginners, fair-weather backpackers, or emergency use, it’s a no-brainer. It offers more compressibility than the Trestles series and costs less than half of any down bag—making it the most accessible gateway into Marmot’s lineup for casual campers.

The Marmot Lost Coast 30° is a value-packed down bag that punches above its weight, offering essential features at a price that undercuts nearly every other 600-fill down option on the market. With certified 600 fill power down and Down Defender, it delivers solid moisture resistance and reliable warmth for spring-to-fall adventures, making it a smart upgrade from synthetic for budget-focused backpackers. The anatomically designed footbox with wrap-around construction enhances thermal efficiency, while the draft collar and ISO testing ensure you’re not guessing your comfort limit.

In field tests across the Ozarks and Southern Appalachians, the Lost Coast performed admirably at 30°F, with minimal cold spots thanks to the anti-snag zipper and snug hood seal. At 1 lb 12 oz (regular), it’s reasonably lightweight and packs smaller than synthetic bags, though not as compact as higher-fill down models. The recycled shell fabric and PFAS-free treatment add eco-appeal, but it lacks dual zippers or internal stash pockets—missing conveniences found on pricier Marmot bags. It’s not built for freezing temps or prolonged rain, but it handles typical shoulder-season conditions with grace.

Against the Ironwood, the Lost Coast uses slightly lower fill power (600 vs 650) and lacks a two-way zipper, but includes ISO testing and a draft collar—features the Ironwood omits. It’s heavier than ultralight options but more affordable than the Angel Fire or Teton. For backpackers wanting a trustworthy, eco-conscious down bag without overspending, the Lost Coast delivers the best balance of price, performance, and sustainability—outperforming synthetic rivals in warmth-to-weight while costing less than premium down models.