It is a testing video of an anti-stab plus bulletproof vest. The testing passed NIJ 0115.00 anti-stab level 2 and 79 rifles bulletproof testing with one vest made from aramid bulletproof fabric in 2016. The results of the bulletproof fabric are below:
32 layers for NIJ 0115.00 anti-stab level 1 (24J) plus NIJ 0101.06 level IIIA protection
38 layers for NIJ 0115.00 anti-stab level 2 (33J) plus NIJ 0101.06 level IIIA protection
46 layers for NIJ 0115.00 anti-stab level 3 (36J) plus NIJ 0101.06 level IIIA + 79 rifles protection
For more, see Concealable Bulletproof Vest and Anti Stab Vest