REI's web page for the Gregory Whitney backpack lists its volume as

87 / 95 / 103 liter

What do you think this exactly mean? Does the backpack have three different ways to use with these different volumes? If so, any idea how they are different?


The increase in pack height to accommodate the S, M and L torso ranges changes the capacity. You'll note the weight is also different because of the extra fabric needed. The hipbelts usually change size quite a bit also since you apparently can't have a tall torso with a skinny waist.

  • I easily break the torso waist rule. It's not actually a good thing. it's really hard to find a pack that sits on my back and holds around my waist nicely. – Desorder Oct 12 '16 at 21:32
  • @Desorder I don't know if it's a good rule in the first place, I'm only 5'9" and I can barely find packs that are small enough for my waist – Raystafarian Oct 14 '16 at 19:25
  • @Raystafarian That's what I said. :D – Desorder Oct 14 '16 at 20:30

It looks like those the backpack comes in three sizes, Small, Medium and Large and what you are seeing is the volume for each size.

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