Bantamweight 15 Sleeping Bag - Men's

Name: Bantamweight 15 Sleeping Bag - Men's
Brand: Marmot
Price: 451.89 CAD
Availability: InStock

40% OFF

CA$451.89

CA$754.65Save CA$302.76 (40%)

Crossed-out price is the retailer's listed price.

at REI

Price checked Nov 6, 2026

First recorded Feb 6

Is this a good deal?

At CA$451.89, this is the lowest price we’ve tracked for this product since February 2026.
Across the 22 Sleeping Gear deals we’re tracking right now, the median discount is 36%. This deal’s 40% off is right around that mark.

Based on prices we’ve recorded from REI since February 2026, refreshed several times daily.

About this product

The Marmot Bantamweight 15 is a men's ultralight mummy sleeping bag built for backpacking where every gram counts. It is rated to 15 degrees Fahrenheit (negative 9 Celsius) under ISO testing, with a comfort threshold of 26 degrees Fahrenheit, giving a reliable performance window for three-season and shoulder-season outings. The insulation is 900-plus fill-power goose down treated with Down Defender, a water-resistant finish that helps maintain loft in damp conditions. Smooth, curved baffles minimize down migration and reduce cold spots throughout the night. The shell and lining are both 100 percent nylon ripstop, keeping packed weight to just 454 grams (about 1 pound 6 ounces) in the short center-zip configuration. That version packs into a stuff sack measuring 6.3 by 12.6 inches with a compressed volume of 5.4 liters. A center zipper provides easy entry and exit, while freely adjustable drawcords let you cinch the hood for a snug, thermally efficient fit. A compression and storage sack is included.

Category: Sleeping Gear
Brand: Marmot
Material: 100% nylon ripstop
Color: DARK AZURE/CLEAR BLUE
Size: 6.3 x 12.6 inches
Fill: 900+ fill-power goose down
Shell: 100% nylon ripstop
Gender: Men's
Lining: 100% nylon ripstop
Best Use: Backpacking
Ultralight: Yes

What people are saying

Reviewers consistently praise the Marmot Bantamweight 15 for its exceptional warmth-to-weight ratio, crediting the 900+ fill-power down and slim mummy design for keeping them comfortable in below-freezing conditions while remaining impressively light and compressible. Thru-hikers and backpackers highlight it as a reliable three-season bag, and the center zipper earns appreciation for helping regulate temperature on warmer nights. The most common complaints center on the slim mummy fit, which feels restrictive for broader or taller users, and the short chest zipper, which several reviewers find awkward to get in and out of. The delicate 7-denier shell fabric also draws occasional concern about long-term durability.