The new POLYSTEEL 200, POLYSTEEL 400 and POLYSTEEL 600 LED flashlights feature COAST's patented Pure Beam Focusing System and are equipped with COAST's patented Twist Focus light technology. Waterproof and incredibly bright, these durable LED lights are enclosed in a stainless steel core that is then wrapped in a molded polymer coating. They're also crush proof, drop proof and scratch proof.