I use the Plexiglass for a gate. I got it from Lowe's and was able to get it cut while I waited. I haven't measured, but I think it is a quarter of an inch in thickness. It has worked great since 1997. I have never thought about the foam on top but I am going to do it. Thanks for the suggestion. I am not sure about the height, but I cann't reach the wigglies over it. If they are all right by the gate, I use a reacher to pick them up. It fits loosely around their waist. Actually, it is too big for most of my little ladies. I have a flying wiggly too and he never has gotten over it. The only problem I have had is with the same boy. He somehow gets it loose. I think it isn't quit tight enough. He doesn't get it open easily and I usually can stop him because I can hear him digging at it. Despite that small problem, it has worker great. Phyllis and the Wigglies: Generosity, Grace and Joey (Joy) In Loving Memory: Faith, Hope, Constance, Bandit and Charrity [Posted in FML issue 4552]