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Sleeping Bags Guide
With the various types of sleeping bags available, it can be difficult to immediately determine which one suits your needs. Envision the season and location where you'll be using it, then consider the shape, material, and features to select the model that's right for you.
CONTENTS
Sleeping bag shapes and fill materials
Montbell offers different series with unique features, combining 3 types of shapes and 3 types of fill materials.
Mummy shape
Shaped to fit the body. Covering up to the head, it fits snugly with minimal gaps between the body, making it difficult for body heat to escape and providing high thermal performance. It is primarily designed for mountaineering use, balancing lightweight compactness with comfort.
- Recommended uses: Mountain climbing / Camping / Touring, etc.
Down model : Lightweight with high thermal performance, compact storage
Seamless Down Series
Lightweight & compact model boasting high thermal performance and stretchability
- : Lightweight & compact
- : Designed specifically for women
- : Ultra-lightweight design
Synthetic Insulation model : Resistant to moisture, maintains warmth
A model that supports a good night's sleep with moisture resistance, excellent thermal performance, and stretch properties
Slim-fit model that combines water resistance, lightweight properties, and moderate stretch
Rectangular (envelope) type
Rectangular in shape, it offers more room compared to mummy-style bags, with ample space around the body and wider foot area, providing a futon-like comfort. When the L-shaped zipper on the side is fully opened, it transforms into a large blanket (for use as a comforter or mattress). Its versatility makes it suitable for family camping, car camping, and other similar activities.
- Recommended uses: Camping / Car camping, etc.
Down model : Lightweight with high thermal performance, compact storage
Synthetic Insulation model : Resistant to moisture, maintains warmth
Due to restrictions that vary by jurisdiction, not all products may be available to the specified "Ship to" location.
Hybrid construction
A hybrid type that combines the snug fit of a mummy-style sleeping bag with the spaciousness of an envelope-style bag. It features an L-shaped zipper that opens wide, allowing it to be spread out and used like a blanket. Highly versatile, it's suitable for camping and car camping, while the down model is also appropriate for mountaineering use.
- Recommended uses: Mountaineering when no snow is present/ Camping / Car camping, etc.
Down model : lightweight with high thermal performance and compact storage
Combines thermal performance and lightweight. Comfortable sleep with a relaxed silhouette
Synthetic insulation model : Resistant to moisture and maintains insulation
Excellent durability and strong resistance to moisture. Comfortable sleep with a relaxed silhouette.
Temperature Guide
Montbell has established a 7-level index from EXP. to #7 for all sleeping bags, setting both a 'Limit Rating' and a 'Comfort Rating' for each. Models with smaller numbers have higher amounts of insulation and suited for lower temperatures, while models with larger numbers are suitable for use when temperatures are higher. The 'temperature usage guide' is based on the 'Comfort Rating' of each sleeping bag model.
'EXP.' stands for Expedition and indicates the highest cold resistance rating.
| Lower Limit Rating | Comfort Rating | ||||||||||||||
| EXP. | |||||||||||||||
| -4℉ | 10.4℉ | ||||||||||||||
| #0 | |||||||||||||||
| 8.6℉ | 21.2℉ | ||||||||||||||
| #1 | |||||||||||||||
| 14℉ | 26.6℉ | ||||||||||||||
| #2 | |||||||||||||||
| Extreme Rating | 23℉ | 32℉ | |||||||||||||
| #3 | |||||||||||||||
| 30.2℉ | 39.2℉ | ||||||||||||||
| #5 | |||||||||||||||
| 37.4℉ | 46.4℉ | ||||||||||||||
| #7 | |||||||||||||||
| 44.6℉ | 51.8℉ | ||||||||||||||
| -4 | 5 | 14 | 23 | 32 | 41 | 50 | |||||||||
Temperature for Seamless Down Hugger 800
Lower Limit Rating
Generally, this is the temperature at which people with a high metabolism and high cold tolerance can sleep without feeling cold while curled up in a sleeping bag.
Comfort Rating
Generally, this is the temperature at which people with a low metabolism and low cold tolerance can sleep in a relaxed position without feeling cold.
The temperature ratings for Montbell sleeping bags are measured using the test method specified by ISO (International Organization for Standardization). (Except for family bags and children's sleeping bags)
Temperature ranges (guidelines for usage) are based on ISO test results. How an individual actually feels may differ.
Montbell does NOT recommend using a sleeping bag based on its Extreme rating.
Please check the temperature and weather conditions of the location where you will use the sleeping bag in advance on your local meteorological agency's website, local conditions reports, or apps that provide mountain weather information.
POINT : Adjust with clothing and additional items
The estimated temperature range for use is measured assuming the user is wearing base layers. By wearing insulated clothing during sleep, or combining a sleeping bag cover or liner, it becomes possible to use a single sleeping bag across different seasons or to reduce the weight of your gear.
List of sleeping bags
Let's choose a suitable sleeping bag based on the minimum temperature of where you'll be using it in. We offer models with down that excel in warmth retention, lightweight, and compactness, as well as models with synthetic insulation that are superior in durability and quick-drying properties.
Down models
Product lineup
| Insulation Material | 900 Fill Power EX Down | 800 Fill Power EX Down | 650 Fill Power Down | 600 Fill Power Down | Down | |||||
|---|---|---|---|---|---|---|---|---|---|---|
| Description | Waterproof & lightweight | Lightweight & compact | Women's specific design | Ultralight half-length | Highly stretchy and comfortable | Achieves both lightweight and comfort | Works like a blanket | |||
| Series | Dry Seamless Down Hugger 900 | Seamless Down Hugger 800 | Seamless Down Hugger 800 Women's | Seamless Down Hugger 800 Half Length | Down Hugger 650 | Down O.D. Sleeping Bag | Down Family Bag | |||
| Temperature Guide ℉ | 12.2 |
EXP. |  |
|||||||
| 3 lbs 4.3 oz Φ7.9 x 15.7 in |
||||||||||
19.4 |
#0 |  |
 |
 |
 |
|||||
| 2 lbs 8.5 oz Φ7.1 x 14.2 in |
2 lbs 6.9 oz Φ6.7 x 16.1 in |
2 lbs 15.6 oz Φ7.9 x 15.7 in |
3 lbs 15.8 oz 16.5 x 8.3 x 8.3 in |
|||||||
26.6 |
#1 |  |
 |
 |
 |
 |
 |
 |
||
| 1 lb 14.7 oz Φ6.3 x 12.6 in |
2 lbs 0.4 oz Φ6.3 x 12.6 in |
1 lb 15 oz Φ6.3 x 15 in |
1 lb 5 oz Φ5.5 x 11 in |
2 lbs 10 oz Φ7.5 x 15 in |
3 lbs 5.1 oz 15.7 x 7.9 x 7.9 in |
3 lbs 12.5 oz 13 x 7.9 x 7.9 in |
||||
32 |
#2 |  |
 |
 |
 |
|||||
| 1 lb 9.6 oz Φ5.9 x 11.8 in |
1 lb 11.1 oz Φ5.9 x 11.8 in |
1 lb 9.7 oz Φ5.5 x 13.4 in |
1 lb 15.7 oz Φ6.7 x 13.4 in |
|||||||
41 |
#3 |  |
 |
 |
 |
 |
 |
 |
||
| 1 lb 4.1 oz Φ5.5 x 11 in |
1 lb 4 oz Φ5.1 x 10.2 in |
1 lb 2.9 oz Φ5.1 x 12.2 in |
13.9 oz Φ4.7 x 9.4 in |
1 lb 8.5 oz Φ5.9 x 11.8 in |
2 lbs 0.2 oz 12.6 x 6.3 x 6.3 in |
2 lbs 10.6 oz 12.2 x 7.5 x 7.5 in |
||||
46.4 |
#5 |  |
 |
 |
 |
 |
||||
| 1 lb 1 oz Φ4.7 x 9.4 in |
1 lb 1.7 oz Φ4.7 x 9.4 in |
16 oz Φ4.3 x 10.2 in |
12.2 oz Φ4.3 x 8.7 in |
1 lb 4.3 oz Φ5.5 x 11 in |
||||||
51.8 |
#7 |  |
||||||||
| 15.7 oz Φ4.7 x 9.4 in |
||||||||||
The temperature ratings for Montbell sleeping bags are measured using the test method defined by ISO (International Organization for Standardization). (Excluding family bags and children's sleeping bags)
Model recommendations are based on the comfort rating of each sleeping bag model. Comfort temperatures are based on ISO test results. Individual perception of temperature may vary.
Weight (g) does not include the stuff sack.
Please check the temperature and weather conditions of the location where you will use the sleeping bag in advance on your local meteorological agency's website, local conditions reports, or apps that provide mountain weather information.
Synthetic insulation models
Product lineup
| Insulation Material | Exceloft | A hollow polyester fiber | |||||
|---|---|---|---|---|---|---|---|
| Description | Water-resistant and durable | Water-resistant and compact | Water-resistant and comfortable design | Works like a blanket | |||
| Series | Seamless Burrow Bag | Seamless Alpine Burrow Bag | O.D. Sleeping Bag | Family Bag | |||
| Temperature Guide ℉ | 12.2 |
EXP. |  |
||||
| 5 lbs 14.9 oz Φ9.8 x 19.7 in |
|||||||
19.4 |
#0 |  |
 |
 |
|||
| 4 lbs 8.7 oz Φ8.7 x 17.3 in |
4 lbs 7.3 oz Φ8.7 x 17.3 in |
5 lbs 6.8 oz 19.7 x 11 x 11 in |
|||||
26.6 |
#1 |  |
 |
 |
 |
||
| 3 lbs 11.6 oz Φ8.3 x 16.5 in |
3 lbs 7 oz Φ8.3 x 16.5 in |
4 lbs 3.4 oz 17.3 x 9.4 x 9.4 in |
3 lbs 7 oz 17.7 × 11 × 11 in |
||||
32 |
#2 |  |
 |
||||
| 3 lbs 1 oz Φ7.9 x 15.7 in |
2 lbs 16 oz Φ7.9 x 15.7 in |
||||||
42.8 |
#3 |  |
 |
 |
 |
||
| 2 lbs 0.9 oz Φ6.7 x 13.4 in |
1 lb 15.7 oz Φ6.7 x 13.4 in |
2 lbs 8.8 oz 14.2 x 7.9 x 7.9 in |
2 lbs 14.9 oz 16.5 x 9.4 x 9.4 in |
||||
46.4 |
#5 |  |
 |
||||
| 1 lb 11.7 oz Φ6.3 x 12.6 in |
1 lb 10.2 oz Φ5.9 x 11.8 in |
||||||
53.6 |
#7 |  |
 |
||||
| 1 lb 5.5 oz Φ5.5 x 11 in |
2 lbs 8.6 oz 14.2 x 8.7 x 8.7 in |
||||||
The temperature ratings for Montbell sleeping bags are measured using the test method defined by ISO (International Organization for Standardization). (Excluding family bags and children's sleeping bags)
Model recommendations are based on the comfort rating of each sleeping bag model. Comfort temperatures are based on ISO test results. Individual perception of temperature may vary.
Weight (g) includes the stuff sack.
Please check the temperature and weather conditions of the location where you will use the sleeping bag in advance on your local meteorological agency's website, local conditions reports, or apps that provide mountain weather information.
Related Information
Utilizes the "Spider Baffle System," a world first design, that allows down to loft to its fullest potential. While maintaining the stretch, lightweight, and compact features, characteristic of Montbell sleeping bags, we have succeeded in enhancing the insulating power of high-quality down even further than before.
Sleeping pads support a comfortable sleep in the outdoors. Montbell offers a wide range of pads suitable for various activities from trekking to winter mountaineering and camping, designed for different purposes and seasons. Please choose a sleeping pad that meets your needs based on the features and specifications of each model.
