UHMWPE: Lightweight and Energy Absorption UHMWPE (Ultra High Molecular Weight Polyethylene), like Dyneema or Spectra fibers, is an ultra-strong and ultra-light fiber, offering excellent absorption of the kinetic energy of ballistic impacts. This allows this material to dissipate the energy of bullets efficiently, thus reducing injuries. Advantages over Aramid: Kinetic energy absorption: UHMWPE absorbs impact energy more efficiently, reducing the risk of injury while providing great protection against bullets. Superior lightness: It is lighter than aramid, allowing better mobility and a more comfortable fit. Greater deformation: Although UHMWPE is effective in absorbing impacts, it tends to deform more under high pressures, which can affect the shape and strength of the ballistic vest in the long term.