Liquid armor was initially presented as a way to increase the survivability of soldiers in high risk roles while retaining their mobility, as reported by NPR in an interview with MIT professors and a U.S.
[9] BAE Systems has been researching a similar Kevlar vest with a fluid between layers of polymer.
These experiments visually showed that liquid armor has ballistic properties that are greater than neat fabrics.
The samples demonstrated similar depth, but the neat Kevlar displayed more yarn-pullout and yarn splaying.
Later on, in a spike impactor stab test, the STF-Kevlar demonstrated significantly better results than the neat Kevlar.
While in another spike impactor stab test, the STF-Kevlar showed small amounts of distortion in the fabric weave.
The most notable feature of liquid armor is its ability to stay flexible while providing reasonable amounts of protection.