How you plan to wear the reversible napsack will influence your sizing decision.

If you plan on frequently sleeping in them and want the bottom cinched closed, Poler recommends you size up so that you have a comfortable amount of space for your feet if you are within 3 inches of the upper limit of the recommended height measurement.

To walk around or lounge in a Napsack simply cinch the bottom of the Napsack around your waist and fold the extra material over.

Please use Poler’s unique sizing and disregard your normal street sizing!


  • S/XS - Fits up to 5'0" tall.
  • M - Fits up to 5'8" tall.
  • L - Fits up to 6'3" tall.
  • XL - Fits up to 6'8" tall.

Width (Measured straight across)

  • S/XS - 23"
  • M - 28"
  • L - 31"
  • XL - 37"