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SIERRA DESIGNS Down Sleeping Bag

2026年6月6日 16:22

SIERRA DESIGNS CUMULUS REGULAR

This is the CUMULUS REGULAR, a masterpiece from the long-established American outdoor brand SIERRA DESIGNS. It was made in the USA around 1980.

The Cumulus was sold as one of the high-end Cloud Series models in the 1970s and 80s and is now difficult to obtain. The down loft remains substantial, and it is in good condition as a piece of vintage outdoor gear.

History of the Manufacturer

SIERRA DESIGNS was founded in 1965 in Berkeley, California, by George Marks and Bob Swanson. It is a brand that has had a major influence on American outdoor history through its tents, sleeping bags, and mountain parkas (60/40 cloth). It is recognized as one of the manufacturers that supported the golden age of American outdoor activities from the 1960s to the 1980s.

In the field of sleeping bags in particular, they were one of the companies that popularized early mummy-style sleeping bags and are famous for having created numerous patents and unique designs.

What is the CUMULUS Series?

According to founder George Marks, they developed the more high-end "Cloud Series" in the late 1970s after copycat products began to appear on the market.

That series included

Cirrus
Cumulus
Nimbus

The Cumulus was the core model of that series, a high-grade version packed with a large amount of high-quality goose down from that time. Looking at the tag, the fill weight is 1lb 8-1/8oz (approx. 0.684kg).
"I acquired it, but because of its extreme warmth and the size of its loft, and since I don't do winter mountaineering, I kept it without using it much, and before I knew it, 40 years had passed." the owner says.

The loft is almost in its original state

Specs
Length approx. 241cm, Width approx. 147cm. SIZE is Regular

Condition
The loft is in good condition, with no tears or scratches. Aside from some slight dullness and fading around the collar, there are no odors such as mold. This item has been kept in excellent storage condition.

*Storage bag is not included. This listing is for the item only.

For bids or inquiries regarding this cherished item, please click here.

****** Shigeru Nakamura Profile ******
Born in Tokyo in 1944. Joined Shogakukan Inc. in 1966. After working in the editorial departments of "Boys Life," "Big Comic," and "Sunday," he served as the founding editor-in-chief of "BE-PAL," "DIME," and "Serai."
Ukulele Acrobat Troupe, Tamagawa Forest Association, Director of the Uemura Memorial Foundation
Cool Senior Magazine