Celestron Foamex 94009 compatible Flexible Dew Shield for Celestron 5" Telescopes by ATOZstars 100% compatible with Celestron Dew Shields. Flexible dew shields are made of non-reflective, flexible, light weight foam rubber sheeting. 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.