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Western Mountaineering sleeping bags as light as 1 lb.!

One of the most effective ways to save weight is by using a high-performance ultralight sleeping bag. Western Mountaineering's mummy-shaped HighLite sleeping bag is an incredible 16 ounces and the SummerLite with full-length zipper is just 1 pound 3 ounces. The semi-rectangular MityLite is only 1 pound 10 ounces! The TerraLite is perfect for side sleepers with lots of room in the middle. It’s only 1 pound 13 ounces and takes you down to 25 degrees. The MegaLite is a super-roomy mummy at just 1 pound 8 ounces. And the UltraLite will take you down to 25 degrees at only 1 pound 10 ounces.

The EXTREMELITE™ HighLite, SummerLite, MityLite, TerraLite, UltraLite, or MegaLite sleeping bag will help you trim not only weight but bulk from your pack. All six sleeping bags are filled with 850+ fill power down, the lightest and most compressible available. Nothing is more important to the quality and function of a sleeping bag than its insulation. That's why these bags have the very best. The fear of a wet bag keeps some people from buying a down bag. This is a mistake. Any wet bag is miserable to sleep in. Keeping your gear dry is not so hard! This is a simple skill you probably learned in elementary school while waiting for your school bus. Tents, bivies, and proper camp placement can all help you keep your bag dry. Shell fabrics are treated with a surface Durable Water Repellent (DWR) finish. This is more than sufficient to shrug off dew and condensation. DWRs can also be easily reapplied as time wears it thin. The shells are made from all new lightweight fabrics that weigh as little as .85 ounces per square yard. By the very nature of these fabrics, total and unrestricted lofting of the down fill is possible.

A stuff sack and storage sack are included. Western Mountaineering has been hand-crafting sleeping bags for over 40 years. All sleeping bags are guaranteed against manufacturer's defects for an unlimited time.

Our agreement with Western Mountaineering doesn’t let us ship to any country outside of the USA where they have a dealer. To see if there is a Western Mountaineering dealer in your country go to their site, then click on “FIND A DEALER” then “International Dealers.”

  Western Mountaineering Summerlite  

Western Mountaineering Summerlite Sleeping Bag


• Full-length #5 YKK Zipper
• Insulated Draft Tube
• 4" Loft
• 32° F
• 5 1/4" Spacing/Continuous Baffles
• 10 oz. Down Fill
• 1 lb. 3 oz. Total Weight
• Made in the USA

At just 1 lb. 3 oz. the SummerLite is the lightest Western Mountaineering bag with continuous baffle construction. The goal in designing the SummerLite was to keep it as light as possible but keep key features and function. It has a full-length zipper with insulated draft protection. Great features and light weight. Left or right zip. Mateable with one of each.


See a helpful video about the lightest Western Mountaineering sleeping bags:



SummerLite: 19 oz., 6'0", 32 degree rating
Shoulder 59", hip 51", foot 38"
$405 No. 3040 Red, stuffs to 6"x12"


SummerLite Long: 21 oz., 6'6", 32 degree rating
Shoulder 60", hip 52", foot 38"
$420   No. 3041   Red, Stuffs to 6"x12