Ballistic gel by the Pound - NATO 20% is a perfect way to try our NATO version of 20% ballistic gelatin product. This formulation of our ballistic gelatin replaces 20% ordnance 240a gelatin solution used by NATO countries. Each pound purchased will be made into a single block. Clear Ballistics's ballistic gelatin is a modern day ballistic gelatin, is 100% synthetic, and contains no organic materials. It has taken the place of conventional ballistic gelatin, which is 100% organic, and completely temperature unstable. It is 100% clear as glass, odorless, reusable, temperatures stable (temperatures up to 240F), and mimics human tissue 100%. It is non-toxic. Our ballistic gelatin is mold able into any shape. Our ballistic gelatin does not mold or rot. Our ballistic gelatin does not require special storage. Our entire ballistic gelatin process is batch controlled. Clear Ballistics does calibration on the gelatin with each batch, and we following the FBI or NATO protocol for ballistics testing developed for ballistic testing of human tissue.