Scientists Say: Kevlar
This super-strong plastic is in many household objects
![Kevlar helmets](https://www.snexplores.org/wp-content/uploads/2019/11/860-header-Kevlar-3619400757_38b81fd7cb_o.jpg)
These helmets are made with 19 layers of Kevlar, a super-strong plastic that is lighter — and far tougher —than steel.
weaponeer/Flickr/ (CC BY-NC 2.0)
This super-strong plastic is in many household objects
These helmets are made with 19 layers of Kevlar, a super-strong plastic that is lighter — and far tougher —than steel.
weaponeer/Flickr/ (CC BY-NC 2.0)