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10 Best Ultralight Sleeping Bags 2025 in the United States
#1
Winner
Sea to Summit Spark Ultralight Down Sleeping Bag, 30-Degree, Regular
The Sea to Summit Spark Ultralight Down Sleeping Bag is designed for those who value both weight and performance in their outdoor gear. Weighing just 1.16 pounds, it's incredibly light, making it an ideal choice for backpacking, bike packing, and touring. It has a temperature rating of 30 degrees Fahrenheit (-1 degree Celsius), suitable for 2-season use, which means it can handle most spring and fall conditions. The high-loft 850+ fill power down insulation ensures excellent warmth-to-weight ratio and is treated with a non-PFC Ultra-Dry down treatment to resist moisture, which is crucial for maintaining insulation in damp conditions.
Rating
10.0
Chosen by1,343
Weight
Temperature Rating
Packed Size
Most important from
53 reviews
#2
MalloMe Sleeping Bags for Adults Cold Weather & Warm - Backpacking Camping Sleeping Bag for Kids 10-12, Girls, Boys - Lightweight Compact Camping Essentials Gear Accessories Hiking Sleep Must Haves
The MalloMe Sleeping Bag is designed for 3-season use, suitable for temperatures from 50°F to 77°F, making it a good choice for spring through fall camping in mild to moderate weather. Weighing about 3 pounds, it is light enough for backpacking, and it compresses well for easy carrying. The bag features synthetic insulation, which performs reliably in damp conditions and dries faster than down, but it may be bulkier and less warm than some high-end alternatives.
Rating
9.4
Temperature Rating
Shape
Insulation Type
Most important from
16450 reviews
#3
Sea to Summit Spark Ultralight Down Sleeping Bag, 15-Degree, Regular
The Sea to Summit Spark Ultralight Down Sleeping Bag is a solid choice for backpackers and outdoor enthusiasts who want a lightweight yet warm option for 2-season adventures. Weighing just under 2 pounds, it’s easy to carry on long hikes or bike trips without adding much bulk. With a 15°F (-9°C) temperature rating, it’s designed to keep you comfortable during chilly nights in spring, fall, or mild winter conditions. The high-quality 850+ fill power down insulation is treated to resist moisture, helping the sleeping bag maintain its warmth even if it gets a bit damp.
Rating
9.1
Weight
Temperature Rating
Shell Material
Most important from
53 reviews
Top 10 Best Ultralight Sleeping Bags 2025 in the United States
#1
Winner
Sea to Summit Spark Ultralight Down Sleeping Bag, 30-Degree, Regular
Sea to Summit Spark Ultralight Down Sleeping Bag, 30-Degree, Regular
Weight: 1.16 Pounds
Temperature Rating: 30°F
Insulation Type: High-loft 850+ fill power down
Shape: Mummy
Shell Material: 10D shell material
Chosen by 1343 this week
MalloMe Sleeping Bags for Adults Cold Weather & Warm - Backpacking Camping Sleeping Bag for Kids 10-12, Girls, Boys - Lightweight Compact Camping Essentials Gear Accessories Hiking Sleep Must Haves
MalloMe Sleeping Bags for Adults Cold Weather & Warm - Backpacking Camping Sleeping Bag for Kids 10-12, Girls, Boys - Lightweight Compact Camping Essentials Gear Accessories Hiking Sleep Must Haves
Weight: 1.4 Kilograms
Temperature Rating: 50 to 80°F
Insulation Type: Synthetic
Shape: Rectangular
Shell Material: Polyester
Sea to Summit Spark Ultralight Down Sleeping Bag, 15-Degree, Regular
Sea to Summit Spark Ultralight Down Sleeping Bag, 15-Degree, Regular
Weight: 1.71 Pounds
Temperature Rating: 15°F
Insulation Type: Ultra-Dry goose down
Shape: Mummy
Shell Material: Nylon
Western Mountaineering 10 Degree Versalite Sleeping Bag Moss Green 6FT 6IN / Left Zip
Western Mountaineering 10 Degree Versalite Sleeping Bag Moss Green 6FT 6IN / Left Zip
Weight: 2.13 Pounds
Temperature Rating: 10°F
Insulation Type: goose down
Shape: Mummy
Shell Material: nylon with polyester outer layer
Sea to Summit Spark Pro Ultralight Down Sleeping Bag, 15-Degree, Regular
Sea to Summit Spark Pro Ultralight Down Sleeping Bag, 15-Degree, Regular
Weight: 1.9 Pounds
Temperature Rating: 15°F
Insulation Type: Down
Shape: Mummy
Shell Material: Nylon
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QEZER 0°F Cold Weather Sleeping Bag for Adults - 650 Fill Power Down, Lightweight & Water-Resistant Winter Backpacking Bag with Compression Sack
QEZER 0°F Cold Weather Sleeping Bag for Adults - 650 Fill Power Down, Lightweight & Water-Resistant Winter Backpacking Bag with Compression Sack
Weight: 3.73 lbs
Temperature Rating: Comfort: 18°F-32°F, Limit 10°F
Insulation Type: 620 Fill Power down, cotton insulation
Shape: Mummy
Packed Size: 14.6 x 7.9 inches
Shell Material: 400T 40D tear-resistant nylon
Western Mountaineering Kodiak LZ Microfiber Sleeping Bag - 6'0
Western Mountaineering Kodiak LZ Microfiber Sleeping Bag - 6'0
Weight: 2 pounds 12 ounces
Temperature Rating: Comfort
Insulation Type: goose-down
Shape: Mummy
Shell Material: polyester taffeta
QEZER Down Sleeping Bag for Adults 20 Degree Cold Weather Sleep with 600 Fill Power Down Backpacking Ultralight Mummy Sleeping Bag（RoyalBlue）
QEZER Down Sleeping Bag for Adults 20 Degree Cold Weather Sleep with 600 Fill Power Down Backpacking Ultralight Mummy Sleeping Bag（RoyalBlue）
Weight: 3.2 pounds
Temperature Rating: Comfort 28°F-45°F, Limited 18°F
Insulation Type: 600 fill power duck down
Shape: Mummy
Shell Material: Nylon
Big Agnes Fly Creek UL - 850 RDS DownTek Ultralight Sleeping Bag, Backpacking Gear, Compact Cold Weather Sleep Quilt, 25 Degree, Regular
Big Agnes Fly Creek UL - 850 RDS DownTek Ultralight Sleeping Bag, Backpacking Gear, Compact Cold Weather Sleep Quilt, 25 Degree, Regular
Weight: 1.6 pounds
Temperature Rating: 25 Degree
Insulation Type: 850-fill down
Shape: mummy
Packed Size: 9 x 20 x 8 inches
Shell Material: ultralight nylon ripstop
#10
QEZER Down Sleeping Bag for Adults 0 Degree with 620 Fill Power Down Ultralight Mummy Backpacking Sleeping Bag
QEZER Down Sleeping Bag for Adults 0 Degree with 620 Fill Power Down Ultralight Mummy Backpacking Sleeping Bag
Weight: 3.7 Pounds
Temperature Rating: 18°F to 32°F
Insulation Type: Down
Shape: Mummy
Shell Material: Nylon
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Buying Guide for the Best Ultralight Sleeping Bags
Choosing the right ultralight sleeping bag is crucial for a comfortable and successful outdoor adventure. The key is to find a balance between weight, warmth, and comfort. Ultralight sleeping bags are designed to be as light as possible without compromising on essential features. When selecting an ultralight sleeping bag, consider the following key specifications to ensure you get the best fit for your needs.WeightWeight is a critical factor in ultralight sleeping bags because the primary goal is to minimize the load you carry. Ultralight sleeping bags typically weigh between 1 to 3 pounds. If you are a long-distance hiker or backpacker, aim for a sleeping bag closer to the 1-pound mark. For shorter trips or if you prioritize comfort over weight, a slightly heavier bag around 2 to 3 pounds may be acceptable. Always consider your carrying capacity and the duration of your trip when choosing the weight of your sleeping bag.
Temperature RatingThe temperature rating indicates the lowest temperature at which the sleeping bag will keep you warm. This is crucial for ensuring you stay comfortable and safe in varying weather conditions. Ultralight sleeping bags often have temperature ratings ranging from 20°F to 50°F. For summer camping or warm climates, a bag with a higher temperature rating (40°F to 50°F) is suitable. For spring and fall or cooler climates, opt for a bag with a lower temperature rating (20°F to 30°F). Consider the typical weather conditions of your camping destinations to choose the appropriate temperature rating.
Insulation TypeInsulation type affects the warmth, weight, and compressibility of the sleeping bag. There are two main types: down and synthetic. Down insulation is lighter, more compressible, and offers better warmth-to-weight ratio, making it ideal for ultralight sleeping bags. However, it can lose its insulating properties when wet. Synthetic insulation is bulkier and heavier but retains warmth even when damp and is generally more affordable. Choose down insulation for ultralight and compressibility benefits, but if you expect wet conditions, synthetic might be a better option.
ShapeThe shape of the sleeping bag affects its weight and thermal efficiency. Mummy-shaped bags are the most common for ultralight sleeping bags because they are snug and reduce the amount of air space to heat, making them more efficient at keeping you warm. They are also lighter due to less material. Rectangular bags offer more room to move but are heavier and less thermally efficient. If you prioritize weight and warmth, go for a mummy-shaped bag. If you need more space and comfort, consider a semi-rectangular shape as a compromise.
Packed SizePacked size refers to how small the sleeping bag can be compressed for storage in your backpack. This is important for saving space and making your load more manageable. Ultralight sleeping bags are designed to pack down very small, often to the size of a water bottle. When comparing packed sizes, consider the volume in liters or the dimensions provided by the manufacturer. If you have limited space in your backpack, prioritize a sleeping bag with a smaller packed size. Ensure it fits comfortably in your pack along with your other gear.
Shell MaterialThe shell material of a sleeping bag affects its durability, weight, and water resistance. Common materials include ripstop nylon and polyester. Ripstop nylon is lightweight, durable, and often treated with a water-repellent finish, making it a popular choice for ultralight sleeping bags. Polyester is also durable and can be more affordable but may be slightly heavier. Choose a shell material that balances durability and weight, and consider water resistance if you expect damp conditions. A durable shell will ensure your sleeping bag lasts through many adventures.