Volume of SWD Long Haul 35/40 (vs. ULA or HMG)

I’m not sure if the dimensions of the Windrider 2400 have changed over the years, but mine circa 2013 was tiny – nowhere near 40L. I think HMG packs in general have optimistic volume ratings.

For example, the dimensions of the Hanchor Marl are slightly larger than the Windrider 3400, but the Hanchor is rated at 49L while the HMG is rated at 56L.
Unrolled: 35.5″ (Marl), 34″ (WR 3400)
Bottom Circumference: 34″ (Marl), 33.5″ (WR 3400)
Top Circumference: 40″ (both packs)

You could argue this both ways (is the HMG rated too large or the Hanchor rated too small) but my gut feeling using the 2400 was that it was smaller than rated. It’s a tiny pack. For example, I could fit vastly more gear in my ULA Ohm than my Windrider 2400 – perhaps 50% more. And the circuit is larger than the Ohm.

Just looking at those specs for the SWD that looks pretty reasonable for a 40 – 42L pack to me (assuming they are accurate). I think you’ll find it substantially smaller than your 67L rated Circuit.

Dan – thanks for that helpful point of reference!

I have that pack. It strikes me as larger than 40 L. I just took it on an overnighter and this is what I had inside the main pouch. It rolled but was tight. I could have packed it a bit better.

NeoAir XLite
Western Mountaineering 5 F bag
Folded up Tyvek footprint, I think 84″ X 36″
HMG Ultamid
Small bag of clothes (lightweight puffy, some gloves, extra socks)
2-3 liter water bottle
Bag of food for 2 days, pretty heavy and bulky food because why not?