Kelty · Sleeping Gear

Cosmic 20 Sleeping Bag: 20F Down - Women's

Name: Cosmic 20 Sleeping Bag: 20F Down - Women's
Brand: Kelty
Price: 188.62 CAD
Availability: InStock

35% OFF

$188.62

$290.18Save $101.56 (35%)

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The current price has held for 45 days.
Across the 33 Sleeping Gear deals we’re tracking right now, the median discount is 37% — this deal’s 35% off is right around that mark.

Based on prices we’ve recorded from Backcountry since July 2026, refreshed several times daily.

About this product

The Kelty Cosmic 20 is a women's three-season mummy sleeping bag designed for backpacking and weekend camping, with a temperature rating of 20 degrees F (approximately -1.3 degrees C) and a European Norm comfort rating of 29.7 degrees F. It is insulated with 550-fill duck down arranged in trapezoidal baffles, which distribute warmth evenly and minimize cold spots. The fill weight comes in at 1 lb 4.7 oz, and the claimed packed weight is 3 lb 15 oz, with a stuff size of 13 by 8 inches. The shell is constructed from 20D 400T nylon with a PFAS-free DWR finish, while the 50D 300T polyester liner is fully recycled. An expanded footbox provides extra room for natural foot movement, and a full draft tube with collar helps retain heat at key points. Dual locking zipper sliders allow ventilation when conditions warm up, and an anti-snag zipper draft tube adds durability. A zippered internal stash pocket and an included stuff sack round out the feature set. The bag fits users up to 5 ft 8 in, with a shoulder circumference of 57 inches and a hip circumference of 52 inches. A limited lifetime warranty is included.

Category: Sleeping Gear
Brand: Kelty
Material: [shell] 20D 400T nylon, PFC-free C0 DWR finish [liner] 50D 300T polyester
Color: Deep Lake/Trellis
Size: 13 x 8in
Shape: mummy
Degree: 20°F
Zipper: full-length
Pockets: 1 internal stash pocket
Venting: dual slider for ventilation
Activity: backpacking, weekend camping

What people are saying

Reviewers consistently praise the Kelty Cosmic 20 Women's as one of the best budget down sleeping bags available, highlighting its cozy, soft lining, impressive loft, and solid warmth for the price. The women's version earns extra credit for added insulation concentrated at the hips and footbox, a cinchable hood, and a draft collar that effectively seals in heat. It is widely recommended for car camping, short backpacking trips, and entry-level use. The most common complaints center on weight and packability: at over 3 pounds, the 550-fill duck down is heavier and bulkier than competing bags at higher fill powers, making it a poor fit for high-mileage backpacking. Reviewers also note the "20F" rating is somewhat misleading, with real-world comfort closer to 30F for most sleepers. The women's version costs noticeably more than the men's version.