The Marmot Phase 20 – Women's is a lightweight three-season down bag cut specifically for a women's build: a shorter length (fitting up to 168 cm), narrower cut, and added insulation in areas where women commonly feel cold faster are the standard adjustments for women's-specific models. The fill is 850+ fill power goose down with a hydrophobic treatment, so it holds its loft better even if condensation dampens the bag inside a tent.
At 810 g with a 6°C comfort rating (EN ISO 23537 tested, -12°C limit), the weight-to-warmth ratio works out to 67.5 g per degree — a strong figure for a three-season bag, putting the Phase 20 among the lighter options for spring-through-fall trekking, including cooler high-altitude nights. A Pertex Quantum 10D ripstop shell and recycled Pertex Quantum 10D liner keep weight low while addressing material sourcing.
A fitted, contoured hood, a draft tube to limit heat loss, and an interior pocket round out the feature set. A solid pick for women who want a light, dependable three-season bag without unneeded winter-grade reserve.
Specifications
Color
Blue
Comfort Temperature
6 °C
Limit Temperature
-12 °C
Extreme Temperature
-25 °C
Temperature Rating Standard
EN/ISO 23537 tested
Season Rating
3-season
Total Weight
810 g (1.79 lb)
Packed Size ( Length x Diameter )
41 x 18 (1.3 x 7.1 ft)
Insulation Type
Goose down
Fill Power
850
Hydrophobic Down
✓
Shape
Mummy
Zipper Side
Left
Zipper Length
Full length
Two-Way Zipper
✓
Shell Fabric
Pertex Quantum 10D nylon ripstop
Liner Fabric
Recycled Pertex Quantum 10D nylon
Draft Tube
✓
Hood Type
Fitted/contoured
Internal Pocket
✓
Size Category
Regular
Maximum User Height
168 cm (5.5 ft)
Gender-Specific Fit
Women's specific
Women-Specific Features
✓
Recycled Materials
✓
Warmth-to-Weight Ratio f(x)
14.8 °C/kg
Weight per Degree f(x)
67.5 g/°C
Bag Type
Mummy sleeping bag
Where to buy
No offers available for this product yet.
Category context Sleeping Bags (417 products)
Weight
Standard weight· mainstream zone 819–1420 g· ranked 100 of 418