measurement systemGetting Sized Right!

Because of the closely contoured fit, we offer each of our Jensen-style packs in five different lengths. A poor fit renders the design as useless as an ill-fitting boot.
The wearer’s height is not always a good indication of the exact size needed and therefore we have developed a system for determining the correct size. You will need to have someone assist you with these measurements.

It is helpful to remove your shirt, to more clearly see and mark your measurements

  1. Stand erect with your arms loose at your sides and have your assistant take a ruler and connect the tops of the shoulders. The intention is to determine the point where the shoulder straps cross the shoulders, which should be some where between the base of the neck and the outside joint, of the shoulder
  2. With a chalk or pen, make a short, horizontal mark, on your back, along the TOP edge of the ruler, near the center of the spine.
  3. Now take your thumbs and place them on the topmost crest of your hips, at your sides with your elbows out.
  4. Again, have your friend connect your thumbs, with the ruler, and make a mark at the center of your spine.

Now measure the distance between the two marks and compare it to the table below.

Size of Pack Volume of Jensen pack Weight Length of back Volume of Giant Weight
Extra Short (XS) 2969 cubic in. 2lbs. 1/2 oz 11.5″ – 13.5″ 4321 cubic in. NA
Short 3037 cubic in. 2lbs. 2 oz 13.5″ – 15.5″ 4378 cubic in. 2 lbs 6 oz
Medium 3105 cubic in. 2lbs. 3 oz 15.5″ -17″ 4435 cubic in. 2 lbs 7 oz
Long 3173 cubic in. 2lbs. 4 1/2 oz 17″ – 19″ 4533 cubic in. 2lbs 9 oz
Extra Long (XL) 3241 cubic in 2 lbs 6 oz 19″ and up 4610 cubic in. 2 lbs 10 oz