Abstract Ballistic armor has been manufactured primarily based on polyaramide (Kevlar and Twaron) or Dyneema but the lifespan warranty in Brazil is only 5 years and after this time period they are incinerated or comminuted and ground up. This study aims to evaluate the changes on the physical. mechanical and morphological properties of polyaramide fibers of ballistic armor after natur... https://jalyttlers.shop/product-category/ostrich-duster/