If you work or play in an environment that puts constant stress on your equipment, then look no further than the Polysteel line of flashlights. 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. Coast LED Waterproof Focusing Flashlight -Polysteel 600