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Big Agnes
Impassable 20L Backpack

5 out of 5 stars
1 Review


Size Chart


Why We Like The Impassable 20L Backpack

Before the sun starts to wake, we throw snacks, water, and layers into the Impassable 20L, cinch our load tight, and head out for a day on the trail. The flexible hip belt takes on the weight of our gear while following our every move to give us a stable carry from sunrise to sunset. After we've made it back home, we swap out our hydration bladder and first aid kit for our laptop and files to prepare for the workweek ahead.


  • Streamlined pack for daylong treks and workday commutes
  • 20L capacity to pack along all you need for long days
  • Padded, contoured back panel provides a comfortable carry
  • Burly material handles daily use and rugged treks with ease
  • Tear strength coating provides water-repelling performance
  • Compartmentalized storage keeps your gear organized
  • Loops and bungees secure your trekking poles when not in use
  • Padded sleeve keeps your laptop safe for the journey
  • Item #BAGZ2CZ
[face fabric] GRS-certified recycled high-tenacity Mipan regen robic nylon, solution-dyed ripstop grid, UTS environmentally-sustainable coating, [lining] nylon taffeta
20L (1220cu in)
compression-molded contoured back panel
Shoulder Straps
contoured, padded, adjustable sternum strap
Waist Belt
Open Range Hip Belt, padded, adjustable (28 - 54in)
Hydration Compatible
2L sleeve, bladder hook, tube routing, sternum strap hose keeper
Reservoir Included
top zipper, 10.5in opening
1 front quick stash, 2 stretch mesh side, 1 padded laptop (15in), 2 zippered (one with key keeper), internal organization pocket
Gear Loops
daisy chain loops
Trekking Pole Carry
yes, bungee tie off
Weight Capacity
20 x 8 x 5.5in
Claimed Weight
1lb 8oz
hiking, commuting, travel
Manufacturer Warranty