Mammut · Sleeping Gear

Relax Fiber -2C/28F Sleeping Bag - Women's

Relax Fiber -2C/28F Sleeping Bag - Women's
26% OFF

$208.89

$282.15Save $73.26 (26%)

at REI

Also check

Links may earn us a commission. Prices are never affected.Details

Price Historylast 2 months

$209$209$209$208.89Jul 3Jul 26Today

Low $208.89 · High $208.89. Hover the line to see each change.

Is this a good deal?

  • The current price has held for 47 days.
  • Across the 30 Sleeping Gear deals we’re tracking right now, the median discount is 37% — this deal’s 26% off is below that mark.

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

About this product

The Mammut Relax Fiber -2C/28F is a women's synthetic sleeping bag designed for backpacking and camping, with an EN-tested lower limit of 28 degrees Fahrenheit (negative 2 degrees Celsius) and a comfort rating of 37 degrees Fahrenheit. Its semirectangular shape is tailored for an optimized women's fit, with a shoulder girth of 66.93 inches, hip girth of 59.1 inches, and a length accommodating sleepers up to 80.71 inches. The Ajungilak synthetic polyester fill resists moisture and simplifies care, while the shell is constructed from polyamide and the lining from 100 percent recycled polyester. A PFC-free durable water repellent treatment adds weather resistance. The central two-way YKK zipper, complete with a zipper garage and insulated draft tube, allows intuitive temperature regulation without cold spots. A soft hood lining reduces noise, and an insulation chamber around the hood opening blocks wind and cold. The revised anatomical footbox adds comfort without extra weight. Packed weight is 907 grams, and the bag compresses to roughly 10.7 liters. An internal pocket, sleep mask, and earplugs are included.

Brand
Mammut
Material
Liningfrom 100% recycled polyester, Polyester, Polyamide
Color
RENAISSANCE
Size
Regular - Center Zip
Fill
Polyester
Shell
Polyamide
Gender
Women's
Lining
Polyester
Weight
2 lbs. 11.39 oz.
Best Use
Backpacking

What people are saying

Reviewers consistently praise the Mammut Relax Fiber -2C Women's bag for its comfort-focused, spacious fit and the distinctive central zipper, which makes entry and exit easy and allows precise temperature regulation. The quiet, soft shoulder and neck lining earns repeated compliments, as does the moisture-resistant Ajungilak synthetic fill and the anatomical footbox that adds room without extra weight. It is widely recommended for warm-weather camping, car camping, and camper van trips. The most common criticism is that the roomy cut, while comfortable, can reduce thermal efficiency, and cold sleepers are cautioned that the bag sits right at its rated limit in near-freezing conditions. The synthetic fill also means it is bulkier and heavier than comparable down options.

Specifications

Packed weight
907 g
Temperature rating
-2°C
Sleeping capacity
1

Related Guides

More Sleeping Gear Deals

View all Sleeping Gear deals