nostr:nprofile1qy2hwumn8ghj7un9d3shjtnyd968gmewwp6kyqpqf02y9wcndxf4jqt3vaw3jm9meu963pc5h5xugtd9f9sx0uwz5aqshwf57k They use polyethylene. Kevlar is something else Kevlar, previously named para-aramid, is a specific brand of aramid fiber developed by DuPont in the 1960s. All Kevlar are aramid fibe...