Treated Vs. Untreated Down Submersion Test

[AZ_Hunter_2000]

I personally think it's all gibberish, I've had 25000mm rain gear soak through but not any tent or my FF sleeping bags.

Had a WM MegaLite's foot box take a direct hit from a multi-hour monsoon (90-100 db from just rain) followed by a multi-hour soak. Top of foot box partially soaked through (still had a lot of water pooled on top) and all water that did manage to get through was pooled on the top of the bottom part of the bag. Poured out water, hopped in and it was dry in the AM.

Rain gear is wonky. How much is actual wet through from rain vs actual humidity and/or perspiration? Breathability is also a critical component to an extent.

 

[WeiserBucks]

Had a WM MegaLite's foot box take a direct hit from a multi-hour monsoon (90-100 db from just rain) followed by a multi-hour soak. Top of foot box partially soaked through (still had a lot of water pooled on top) and all water that did manage to get through was pooled on the top of the bottom part of the bag. Poured out water, hopped in and it was dry in the AM.

Rain gear is wonky. How much is actual wet through from rain vs actual humidity and/or perspiration? Breathability is also a critical component to an extent.

I'm not disagreeing with you at all, I'm just saying waterproof ratings aren't gospel in my experience.

 

[Macintosh]

The actual waterproof rating should be correct, but the way the fabric is used matters a ton. Watch your tarp or rain fly shed water all day…then merely touch it and hold your finger there on the inside, and watch droplets form where you are touching it. It isnt as simple as the water column.