The Byrna Eco-Kinetic training/recreational projectile is a GAME CHANGER! The Eco-Kinetic is one of the lowest priced less-lethal projectiles available. More importantly, it's water-solubility leaves no trace after outdoor use-you no longer need to clean up the remnants of plastic shells after each range session. Simply hose down the practice area with water or just leave it for mother nature to handle. The Eco-Kinetic projectiles also feature Byrna's proprietary VI (Visual Impact) Technology that produces a small dispersion cloud and leaves a highly visible mark where the target is hit.