Big Agnes Greystone -7°C Comfort Rating Down Sleeping Bag
BIG AGNES GREYSTONE: 20 DOWN-FILL TRADITIONAL MUMMY SLEEPING BAG
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What's Included
Storage sack & stuff sack included
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size + Specifications
Regular
Total Weight:
1.02kg
Total Fill Weight:
539g
Compressed Bag Size:
22 x 22cm
Stuff Sack Size:
21L 23 x 51cm
Max User Height:
183cm
Recommended Pad Size:
Works with any pad size or style. Use higher insulation pads in colder conditions.
Shoulder Girth:
152cm
Hip Girth:
137cm
Foot Girth:
91cm
Long
Total Weight:
1.11kg
Total Fill Weight:
595g
Compressed Bag Size:
23 x 23cm
Stuff Sack Size:
21L 23 x 51cm
Max User Height:
198cm
Recommended Pad Size:
Works with any pad size or style. Use higher insulation pads in colder conditions.
Shoulder Girth:
160cm
Hip Girth:
145cm
Foot Girth:
99cm -
what we think
The Big Agnes Greystone 20 is a reliable and well-rounded three-season down sleeping bag designed for comfort, warmth and practicality across a wide range of conditions. With 650-fill DownTek water-repellent down insulation, it offers dependable performance in cool and damp environments, making it a solid choice for UK backpacking, bikepacking and general camping from spring through to autumn.
At Valley and Peak, we appreciate how the Greystone 20 balances warmth and weight without pushing into the ultra-light or ultra-technical category. It packs down reasonably well for a down bag in this class and delivers a comfortable sleep system without being overly bulky or complicated.
The shape is a classic mummy fit, designed to retain warmth efficiently while still offering a bit of room to move. Features like the insulated draft collar, full-length zip with anti-draft protection and a shaped footbox all add to the sleeping experience, especially on chillier nights. The shell fabric feels durable yet soft, and the build quality is consistent with what we have come to expect from Big Agnes.
With a comfort rating that suits typical three-season use in the UK, this bag is ideal for nights in the hills, forest camps or multi-day treks where temperatures might fluctuate but are unlikely to drop far below freezing. It may not be the lightest option available, but for those who prioritise warmth, comfort and reliability over saving every last gram, it is a very practical and well-priced option.
In summary, the Big Agnes Greystone 20 is a dependable three-season bag that offers good warmth, thoughtful features and excellent value for money. A strong choice for regular UK campers and backpackers who want a bit of extra comfort on the trail. -
Weight
1020 g
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Fill Power
600
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Season Rating
4-Season
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Comfort Limit
-9°C
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"The Valley and Peak promise is built on three pillars: thoughtfully curated gear, exceptional customer service, and a genuine love for the outdoors. As an independent, family-run business, we carefully select products from a wide variety of cottage gear brands and trusted names, ensuring that each item is rigorously tested and loved by our team. Our customer service is a cornerstone of our brand, offering personalised support to help you choose and care for your gear with confidence"
Jim De'Ath, Managing Director