Sleeping Bag Overfill

$35.00

Spec sheet Checked by IndieOut

Maker: Western Mountaineering
Made in: San Jose, CA
Type: Accessories
Availability: In stock at maker
Added: Apr 10, 2026
Last verified: Apr 10, 2026
Fulfilled by: Western Mountaineering — direct

Made in San Jose, CA by Gary Schaezlein. Handmade down sleeping bags from San Jose since 1970.

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Meet the maker

Western Mountaineering

San Jose, CA · Sleeping Bags & Down

Handmade down sleeping bags from San Jose since 1970. Gary Schaezlein has been filling bags by hand for over 50 years. The gold standard in expedition sleeping bags.

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Details

Sleeping Bag Overfill – Extra Down Insulation for Western Mountaineering Bags Boost your sleeping bag’s performance with the Sleeping Bag Overfill , an optional upgrade that adds extra 850+ fill power ethically sourced goose down throughout your bag’s fully baffled chambers. This custom modification increases warmth by approximately 5°F , making it ideal for colder conditions, high-altitude trips, or anyone who simply prefers a warmer night’s sleep. In addition to the immediate warmth boost, an overfill helps maintain long-term loft retention . Over time, even the highest quality down can l...