Which is better for backpacking?

The 3 Season bag. At 893 g and 6.8 L packed it saves roughly a kilogram and a lot of pack space over the Wild Aspen. The Wild Aspen is fine for short walks from the car.

On paper the Wild Aspen: a 20°F rating against the 3 Season bag's 30°F comfort and 18°F ISO lower limit. In practice the down bag's loft and draft-free mummy cut often feel warmer for its weight, and down keeps loft longer if cared for.

Will the 3 Season bag fit me?

Only if you are 5 ft 7 in or shorter. Taller sleepers should take the Wild Aspen, which is listed at 74 to 82 inches long depending on which spec line you read.

Down holds its loft for many seasons if washed and stored loose; synthetic fill gradually loses loft, especially when compressed for storage. The Wild Aspen's hang loops help, but its shell and fill will degrade sooner with heavy use.

Is the Wild Aspen good in damp conditions?

Better than the down bag. Its synthetic fill and water-resistant polyester shell tolerate damp better, though neither bag is waterproof. Use a waterproofing spray and air both bags out.

Is the 3 Season bag worth stepping up to?

Yes if you carry your bag and fit the height limit. The weight and packed size gap is large, and down outlasts synthetic fill. Stay with the Wild Aspen for car camping or a wide, roomy bag.

Women's 3 Season Sleeping Bag vs Wild Aspen 20 Degree Sleeping Bag

The Wild Aspen 20 is the roomier, cheaper-feeling car-camping bag: rectangular, 74 to 82 inches long, with a hood and draft tube, and owners rate it 4.6 out of 5. The 3 Season bag is the backpacking pick: about 893 g with 750+ fill down, a 6.8 L packed size and a women's-specific cut, though it fits only to 5 ft 7 in. Buy the down bag if you carry your sleep system; buy the Wild Aspen if you drive to camp or want a wide, forgiving bag.

Choose the 3 Season Sleeping Bag if you backpack, want down warmth at under a kilo, and fit within its 5 ft 7 in height limit.
Choose the Wild Aspen 20 if you car camp or want a wide rectangular bag with a hood that suits taller sleepers.

Prices

Women's 3 Season Sleeping Bag: $20.00 at Sports Basement (last seen Nov 12)
Wild Aspen 20 Degree Sleeping Bag: $84.95 at Klymit (last seen Nov 12)
Difference: the Women's 3 Season Sleeping Bag is $64.95 cheaper than the Wild Aspen 20 Degree Sleeping Bag at the latest prices (Nov 12)

	Women's 3 Season Sleeping Bag	Wild Aspen 20 Degree Sleeping Bag
Insulation	750+ fill RDS down, non-PFAS, Ultra-Dry treated	ThermaPro synthetic
Weight	893 g (1 lb 15.5 oz)	4.2 lb (about 1.9 kg)
Packed size	6.8 L compressed	20 x 8.5 in stuff sack
Shape	Women's-specific relaxed mummy	Rectangular with mummy hood
Length fit	Fits up to 5 ft 7 in	74 x 34 in, listed up to 82 in in the description
Temperature rating	30°F comfort, 18°F ISO lower limit	20°F rating, 20 to 39°F range
Wet-weather behaviour	Down loses loft if soaked; Ultra-Dry treatment helps	Synthetic keeps some warmth when damp; water-resistant shell
Zipper	Free-Flow zipper system	Standard zipper with draft tube

Spec	Women's 3 Season Sleeping Bag	Wild Aspen 20 Degree Sleeping Bag
Weight	1lb 15.5oz \| 893g	4.2 lb
Best Use	Backpacking	—
Compressed Volume	6.8L	—
Comfort Temp Rating	30°F \| -1°C	—
Fill Weight	16.2 oz 459 g	—
Temperature Rating (ISO Lower Limit)	18°F -8°C	—
Fits Up To Height	5 ft 7 in 170 cm	—
Insulation	RDS certified, 750+ non-PFAS Ultra-Dry Down	—
Shape	Women’s-specific relaxed mummy	—
Zip Options	Free-Flow zipper system	—
Comes With	40D recycled, bluesign APPROVED nylon compressi…	—
Temperature rating	—	20 ºF

Spec	Women's 3 Season Sleeping Bag	Wild Aspen 20 Degree Sleeping Bag
Bag shape	—	Rectangular
Fill material	—	Synthetic
Size	—	L
Dimensions	—	74 x 34in
Packed dimensions	—	20 x 8.5
Shell material	—	66D Polyester
Insulation material	—	ThermaPro Synthetic
Liner material	—	90T Polyester
Temperature range	—	20 to 39 Degrees F
Stuff sack included

Women's 3 Season Sleeping Bag vs Wild Aspen 20 Degree Sleeping Bag

Prices

Women's 3 Season Sleeping Bag vs Wild Aspen 20 Degree Sleeping Bag

Prices

Wild Aspen 20 Degree Sleeping Bag

What separates them

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