Meade #673 Dew Shield Compatible Flexible Dew Shield for Meade ETX-90EC, ETX-90AT, ETX-90PE Telescopes Meade #673 compatible flexible dew shield for ETX-90EC, ETX-90PE, ETX-90AT Flexible dew shields are made of non-reflective, flexible, light weight foam rubber sheeting. Flexible dew shields will not crack or dent like rigid (metal or hard plastic) dew shields. Flexible dew shields can be stored easily rolled up, lay flat or stay on the telescope. Flexible dew shields work better than rigid dew shield because foam rubber insulates better.