Skip to main content

Big Agnes Boot Jack 25 Down Sleeping Bag (-4C)

Big Agnes Boot Jack 25 Down Sleeping Bag (-4C)
Please select options


Down Fill traditional mummy bag designed to excel in all conditions

Big Agnes traditional down mummy bags deliver high value and performance in a lightweight bag. Ideal for backpacking but versatile enough for couch surfing, they are insulated with DownTek™ and use baffle construction for efficient heat distribution. If you’re in the market for a mummy shaped bag constructed with high quality, lightweight materials these bags are your ticket to traveling fast and light.

Weight: 964g / 2.13 lbs
Fill: 600 fill Power DownTek™ water repellent down
Fill Weight: 500g / 18oz

Big Agnes traditional down mummy bags deliver technical, lightweight performance to excel on and off the trail with high thermal value, compressibility, and comfort wherever you go.

Traditional mummy shape allows for lightweight and increased thermal value

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

Oversized interior anti-draft collar

Low-profile cordlock lets you un-cinch the hood with one hand

Breathable shell fabric with a water repellent finish

Anti-snag zipper for a smooth, quick zip

65"/165cm YKK #5 anti - snag locking zipper

Two-way zipper

Zipper Garage

Liner loops

Mate together left and right zip bags

Mesh storage sack & nylon stuff sack

No-draft collar and no-draft zipper

Exterior loops for hang drying or storage

Bag Weight Regular: 2lb 2oz / 964g
Long: 2lb 5oz / 1.05kg
Fill Weight Regular: 18oz / 500g
Long: 19oz / 530g
Compressed Bag Size Regular: 8" x 8" / 20 x 20cm
Long: 8" x 9" / 20 x 23cm
Stuff Sack Size Regular: M 8" x 17.5" / M 20 x 45cm
Long: M 8" x 17.5" / M 20 x 45cm

Nylon ripstop shell fabric with a water-repellent finish

Nylon taffeta lining

Baffled construction

600 fill DownTek™ - a water repellent down that uses a PFC-Free, bluesign™ approved chemistry.


Traditional Down Mummy Bags-2019 (Captioned)

Part Numbers

Option UPC MPN Store SKU
Regular 841487122591 BTMBJRL19 SLE591390481
Long 841487122607 BTMBJLL19 SLE601883161