Jean-Pierre Bantin
Active Member
I have only just read this post but wanted to add something in relation to Goretex (or similar) clothing.
It may be a fabric that stops rain from getting in but allows perspiration out however:
Raindrops are made up of many molecules of water, while sweat is in the form of vapour, which is usually a single molecule. This evaporates from the surface of your skin, through a base layer then out through the holes in the fabric which are big enough to let the vapour out, but too small to let raindrops in. Breathability is reduced if there is a lot of water clinging to the outside of the fabric, so an additional water repellent finish is required that allows the water run off the outside of the fabric so the vapour can escape.
That additonal water reppelent finish is key and can make all the difference. You can buy your own treatment and apply to existing clothing if currently having this issue. However I don't own any Goretex as much of my fishing always seems to involve going through head undergrowth where thorns just shred the material.
It may be a fabric that stops rain from getting in but allows perspiration out however:
Raindrops are made up of many molecules of water, while sweat is in the form of vapour, which is usually a single molecule. This evaporates from the surface of your skin, through a base layer then out through the holes in the fabric which are big enough to let the vapour out, but too small to let raindrops in. Breathability is reduced if there is a lot of water clinging to the outside of the fabric, so an additional water repellent finish is required that allows the water run off the outside of the fabric so the vapour can escape.
That additonal water reppelent finish is key and can make all the difference. You can buy your own treatment and apply to existing clothing if currently having this issue. However I don't own any Goretex as much of my fishing always seems to involve going through head undergrowth where thorns just shred the material.