It's the flys that don't breathe at all. "Solid" inners are usually a very light ripstop with a DWR coating, and while not enabling as much airflow as mesh are still quite breathable. However, the DWR coat brings up a possible issue because while an untreated fabric will typically let moisture soak in and then evaporate the DWR will prevent that so you get droplets forming, and exactly the same feature you want in place to make drips from the fly roll off rather than soaking in to fabric is the feature you don't want to let internally generated moisture get out... The actual breathability of the fabric, measured in how much air can pass through it in a given time, doesn't change but a fabric with a DWR coat is generally clammier in a humid atmosphere. If the moisture is vapour it'll go through, but if it's a condensed droplet (and especially in the cold it tends to be) the DWR will tend to keep it that way.Sweep wrote: ↑20 Jan 2023, 2:56pmyep agree - the Skorpion 2 inner is rather light on mesh.pjclinch wrote: ↑20 Jan 2023, 1:46pmUnless you have cotton canvas or single-skin Goretex or similar, very few modern tents are at all breathable. The flys are generally all impermeable. Where condensation will go up or down if all else is equal is the amount of moist air that can escape through holes and gaps, but if it does it'll take its heat with it.
You choose, you lose..
Again, you choose, you lose..
Pete.