Meteors™ Disposable Earplugs, Foam, Green, Uncorded no checkout reusable container that will hold reusable container that will hold up in your tool box and better balanced design for maximum performance and accessibility Xtreme Leverage Technology (XLT™) increases performance and reduces hand fatigue Laser heat treated cutting edges perform better and last longer Precision machined knife and anvil style cutting edges ensure perfect mating for superior performance and longevity Forged high carbon US steel for maximum strength and durability is specially coated for ultimate rust prevention slow recovery foam and contoured shape molds easily to the ear canal for all day comfort The contours follow the shape of the ear canal which means less pressure at the smallest diameter of the ear canal Innovative undercut design affords a secure fit all day long 100% PVC free