>>2499567Theres ventile
Its tightly woven cotton
When it gets wet, the fibres expand and water cannot penetrate through the inside
Takes forever to dry and its extremely heavy
Before that people used wool. Lanolins the oil of sheep hair that is hydrophobic. Most modern wool gets rid of most of it.
All the options are heavy though.
Theres also trying to find a 100% rubber coat but itd be as sweaty and heavy as anything.
