Skip to main content

Big Agnes Greystone 20 Down Sleeping Bag (-7C)

Big Agnes Greystone 20 Down Sleeping Bag (-7C)
Please select options


The Big Agnes Greystone 20° mummy-style sleeping bag delivers value and performance in a lightweight bag with sustainability in mind.

Ideal for backpacking but versatile enough for couch surfing, the Greystone sleeping bags feature 600 fill DownTek™ insulation, recycled shell and lining fabrics, and a PFC-free coating to repel moisture. This bag is your ticket to getting out there in comfort and warmth!

Big Agnes All-Gender Greystone bags deliver technical, lightweight performance to excel on and off the trail with high thermal value, compressibility, and comfort wherever you go

PFC-free water repellent coating keeps you dry without the use of harmful chemicals

Traditional mummy shape allows for light weight and increased body heat retention

Contoured hood follows the shape of your head for a more comfortable fit

Oversized no-draft collar and no-draft zipper to keep the cold out

Low-profile cordlock lets you uncinch the hood with one hand

Insulated tube along upper hood opening seals out drafts when cinched

65"/165cm YKK #5 anti - snag locking zipper for a smooth, quick zip

Two-way zipper and Zipper Garage positioned on sleeper's left side of bag

Mate together left (All-Gender) and right (Women's) zip bags to share warmth with your tent mate

Interior loops secure a liner for added warmth - liner sold separately

Total Weight: Regular 1.02kg 2,25lbs
Long 1.11kg 2.44lbs
Total Fill Weight: Regular 539g 19oz
Long 595g 21oz
Compressed Bag Size: Regular 22 x 22cm 8.5 x 8.5"
Long 23 23cm 9 x 9"
Stuff Sack Size: Regular 23 x 51cm 9 x 20"
Long 23 x 51cm 9 x 20"
Max User Height: Regular 183cm 6'
Long 198cm 6' 6"
Shoulder Girth: Regular 152cm 60"
Long 160cm 63"
Hip Girth: Regular 137cm 54"
Long 145cm 57"
Foot Girth: Regular 91cm 36"
Long 99cm 39"


Shell: Recycled polyester ripstop with PFC-free water-repellent finish


Lining: Recycled polyester taffeta with PFC-free water-repellent finish


Fill: 600 fill DownTek™ with bluesign® approved PFC-free water-repellent chemistry


Baffled construction


Storage sack & stuff sack included

Down Sleeping Bag Care:



Keep your bag hanging if possible, or in its included mesh storage sack

Store in a cool, dry place away from heat sources


Even dirtbags wash their bags!

Machine wash in a washing machine WITHOUT AN AGITATOR, agitators are likely to cause damage to your gear

Oversized bags require oversized machines, you may need to go to a laundromat to wash your larger bags

Wash on a warm, gentle cycle

Use gear specific soap, we recommend Nikwax Down Wash Direct

Rinse twice

Tumble dry low heat with clean tennis balls

Finish by drying on high heat in 5 minute intervals to loft down

*Allow to cool between intervals to avoid damage to shell*


Do not use fabric softeners

Do not bleach

Do not iron

Do not dry clean


Repairs and Warranty: 

All Big Agnes gear is guaranteed against manufacturing or material defect. We do not warranty products damaged from normal wear and tear, alteration made by owner, misuse, accidents, or damages cause

Part Numbers

Option UPC MPN Store SKU
Regular 841487144067 BTMG20RL23 SLE545700103