Down Mummy Sleeping Bag for Adults , -4°F–45°F Temperature Options | Traverseon

Five Fill Options, Better Warmth for Every Camp Night

This down mummy sleeping bag comes in five fill weights—400 g, 600 g, 800 g, 1000 g, 1200 g and 2000g — so you can balance warmth, packed weight, and the conditions of each trip. The corresponding comfort-temperature references are 20°C, 15°C, 10°C, 5°C,  0°C  and -12℃ (68°F, 59°F, 50°F, 41°F, 32°F and 10.4°F), with a laboratory extreme-limit reference down to -20°C (-4°F). From lightweight summer camping and cool-weather backpacking to car camping near freezing, each option gives you a more practical level of insulation for the night ahead.

Measuring 210 × 80 × 50 cm (82.7 × 31.5 × 19.7 in ), the roomier mummy shape maintains a close, heat-efficient profile while leaving more natural space through the shoulders, legs, and foot area. Depending on the selected fill weight, the sleeping bag weighs approximately 0.85–2.55 kg (1.87– 5.62 lb) and compresses to about 18 × 21 cm through 24 × 45 cm (7.1 × 8.3 in through 9.45 × 17.72 in), making it easier to pack for backpacking, weekend camping, hunting camps, or road trips. An adjustable hood, draft-blocking structure, and full-length zipper help reduce heat loss around the head, neck, and zipper area, while the water-resistant shell helps handle dew and light moisture. Available colors include Red, Dark Blue, Black, Lake Blue, Wine Red, Orange-Yellow, Gray, Army Green, and Blue.

• 400–2000 g in Six Fill Options, From 20°C (68°F) Summer Nights to a -20°C (-4°F) Extreme Limit Test
  From warm summer nights at 20°C (68°F) to cold camps at −12°C (10.4°F), Six fill options make it easier to choose the right level of warmth for each season, with extreme low-temperature testing reaching down to -20°C (-4°F). Lighter options suit summer hiking and mild spring or fall weekends, while higher-fill versions bring added warmth to near-freezing car camps, hunting trips, and base-camp nights.
• Down-Filled Insulation, Soft Warmth as Nighttime Temperatures Drop
  Down insulation creates a soft, lofty layer around the body that helps retain warmth throughout the night. When lakeside air turns cool, fall temperatures drop after sunset, or the tent begins to chill before dawn, the sleeping bag keeps you gently wrapped without the stiff, heavy feel of bulky insulation.
• Roomier Mummy Shape, More Natural Movement for Side Sleeping
  The 210 × 80 × 50 cm (82.7 × 31.5 × 19.7 in ) mummy profile leaves more natural room through the shoulders and legs while tapering toward the feet to reduce unused space. Side sleeping, bending your knees, and changing positions feel less restrictive than inside a tightly cut traditional mummy bag.
• Adjustable Hood and Draft-Blocking Design, Hold Warmth Through Colder Hours
  The adjustable hood draws the opening closer around the head, while the neck and zipper-side structure helps reduce cold air entering the bag. When temperatures fall after midnight or cool air moves around the tent before sunrise, the head, shoulders, and upper body remain more fully enclosed for fewer cold interruptions.
• 1.5 m Side-Opening Two-Way Zipper, Easier Entry and Lower-Body Venting
  The 1.5 m (59.1 in) two-way YKK zipper opens along the side for easier nighttime entry and can be adjusted from the lower end to release excess heat around the legs. As temperatures change through the night, the opening can be adjusted gradually while the enclosed foot area remains covered.
• 400T Water-Resistant Shell, Better Protection from Dew and Condensation
  The 400T outer shell helps handle morning dew, tent-wall condensation, and light campsite moisture before it reaches the insulation inside. At lakeside, forest, or high-humidity campsites, the sleeping bag is better prepared for the damp conditions that often develop overnight.
• Soft Inner Lining, More Comfortable Through Long Camp Nights
  The soft inner surface rests gently against sleepwear and base layers, reducing the rough friction that can become noticeable while turning during the night. After a full day of hiking, driving, or setting up camp, the interior creates a more relaxing place to settle in and recover.
• Multiple Pack Weights and Compact Storage, Easier to Fit Every Loadout
  Depending on the selected fill, the sleeping bag weighs approximately 0.85–2.55 kg (1.87–5.62 lb) and compresses to about 18 × 21 cm through 24 × 45 cm (7.1 × 8.3 in through 9.45 × 17.72 in). Lighter options fit naturally into a hiking pack, while higher-fill versions store neatly in a camping gear bag or vehicle trunk.
• Different Fill Options Zip Together, More Shared Space for Two Campers
  Different fill options within the same product line can zip together along the side to create a wider shared sleeping space. Couples and two-person campers can choose different fill weights based on their individual warmth needs, while the joined setup retains the enclosed lower structure of the sleeping bags.

• Product Type: Down Mummy Sleeping Bag
• Shape: Roomier Mummy Shape
• Fill Weight Options: 400 g (14.1 oz), 600 g (21.2 oz), 800 g (28.2 oz), 1000 g (35.3 oz), 1200 g (42.3 oz) and 2000 g (70.5 oz)
• Open Size: 210 × 80 × 50 cm (82.7 × 31.5 × 19.7 in)
• Insulation: Down Fill
• Net Weight:
  400 g option: Approx. 0.85 kg (1.87 lb)
  600 g option: Approx. 1.05 kg (2.31 lb)
  800 g option: Approx. 1.25 kg (2.76 lb)
  1000 g option: Approx. 1.45 kg (3.20 lb)
  1200 g option: Approx. 1.65 kg (3.64 lb)
  2000 g option: Approx. 2.55 kg (5.62 lb)
• Temperature Performance:
  400 g option: Comfort temperature 20°C (68°F), intermediate temperature reference 15°C (59°F), lower limit 7°C (45°F)
  600 g option: Comfort temperature 15°C (59°F), intermediate temperature reference 10°C (50°F), lower limit 5°C (41°F)
  800 g option: Comfort temperature 10°C (50°F), intermediate temperature reference 5°C (41°F), lower limit 0°C (32°F)
  1000 g option: Comfort temperature 5°C (41°F), intermediate temperature reference 0°C (32°F), lower limit −5°C (23°F)
  1200 g option: Comfort temperature 0°C (32°F), intermediate temperature reference −5°C (23°F), lower limit −13°C (9°F)
  2000 g option: Comfort temperature -12°C (10°F), intermediate temperature reference -15°C (5°F), lower limit -20°C (-4°F)
  Temperature Note: Comfort temperature should be the primary reference when choosing a sleeping bag for normal overnight use. The intermediate temperature provides an additional reference as warmth requirements increase. The lower limit is a laboratory-tested low-temperature reference and does not represent comfortable sleep at that temperature. Actual warmth varies with cold sensitivity, clothing, sleeping-pad R-value, shelter, wind, and humidity.
• Outer Shell: 400T Water-Resistant Nylon
• Hood: Adjustable Hood
• Zipper: 1.5 m (59.1 in) Two-Way YKK Side Zipper
• Approx. Compressed Size: 18 × 21 cm to 24 × 45 cm (7.1 × 8.3 in to 9.45 × 17.72 in), depending on the selected fill option.
• Opening Structure: Partial side-opening design; the sleeping bag does not open completely flat
• Zip-Together Configuration: Different fill options within the same product line can zip together to create a shared two-person sleeping space
• Available Colors: Red, Dark Blue, Blue, Black, Lake Blue, Wine Red, Orange-Yellow, Gray, and Army Green

Warm Tips

• Temperature Selection: Choose primarily by the comfort temperature of each fill option and allow an adequate warmth margin based on your cold sensitivity and the expected overnight low.
• Real-World Warmth: Actual warmth varies with clothing, sleeping-pad R-value, shelter, wind, humidity, elevation, and individual physical condition.
• Cold-Weather Use: Near the lower limit or during rapidly changing weather, do not rely on the sleeping bag as your only source of cold protection. Check the forecast and carry additional insulation and an emergency plan.
• Moisture Protection: The water-resistant shell helps handle dew, condensation, and light moisture, but the sleeping bag is not fully waterproof. Avoid prolonged rain exposure and direct contact with standing water.
• Storage and Care: Air out the sleeping bag after use and make sure it is completely dry before storage. Avoid long-term compressed storage to help preserve loft and reduce clumping, odor, and loss of insulation performance.