I guess I am old school and still think wool is best between it and Poly-Pro. Here is why.
1. It breathes very well.
2. It does not get "funky. Poly-Pro stinks!
3. Poly melts if an ember pops and lands on you with an open fire.
I have never used silk so I cannot give an opinion on it.
1. It breathes very well.
2. It does not get "funky. Poly-Pro stinks!
3. Poly melts if an ember pops and lands on you with an open fire.
I have never used silk so I cannot give an opinion on it.