Big Agnes

Big Agnes Mirror Lake 20 Regular Right Zip

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Our 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.

Specs + Sizing

Bag Weight Pet: 2lb 8oz / 1.13kg / Reg: 2lb 11oz / 1.22kg
Fill Weight Pet: 22oz / 620g / Reg: 23oz / 650g
Compressed Bag Size Pet: 8in x 9in / 20 x 23cm / Reg: 8in x 10in / 20 x 25cm
Stuff Sack Size Pet: 8in x 17.5in / 20 x 45cm / Reg: 8in x 17.5in / 20 x 45cm


Traditionally insulated bags designed without the integrated pad sleeve found on Big Agnes System bags

Traditional mummy shape allows for light weight and increased thermal value

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

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

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

Construction + Materials

Breathable Nylon rip-stop shell fabric with a water repellent finish

Nylon taffeta lining

Baffled construction

600 fill DownTek™ water repellent down

55"/140cm YKK #8 zipper - petite bags

65"/165cm YKK #8 zipper - regular and long bags
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