I have electronic muffs plugs of all types. What I use most are the Express Pod Plugs, from E.A.R. They look like small mushrooms with a handle for a stem and a closed-cell foam cap. They are simple to install and remove, do not need to be rolled up to install and use no batteries. They are very inexpensive and can be washed, when dirty. You can order a large quantity from the company, direct. Best protection of all, no doubt, is foam plugs, covered by muffs. JL

> Jim Legg <