Spectra Shield
Spectra Shield is a composite material used in bulletproof vests and vehicle armour. It is manufactured by Honeywell. Spectra is a fiber offered by Honeywell, and "Shield" is their patented process for using resin and a "plastic film" to bind multiple overlapping layers of Spectra, without having to have them be woven together.
Other popular fibers with similar uses are aramid and Dyneema.