Take a look at picture in order to see how to repair a "blue bug" that appears with balaclava models that has goggles on them.

Glass selection (one with alpha channel for transparency) never must be older than other model parts, otherwise these other parts will not be seen throught glass selection, but you will be in able to see only blue silhouette of them (what currently is happening with balaclavas with goggles) {F25423}