The polysteel 600 flashlight is waterproof, drop proof and crush proof while possessing our pure beam optics system with twist focus to make the light ultra durable and ready to weather any storm. With a stainless steel core and a poly outer, we put this light to the test and it passed each one with style. The polysteel 600 flashlight is impact-resistant, waterproof and its LED is virtually unbreakable. The polysteel 600 flashlight is backed by Coast's lifetime warranty against defects in materials and workmanship.