Stratonautical space suit

The mobility of the suit was tested at the Cuatro Vientos experimental station, and according to Herrera it was "satisfactory".

Herrera designed a special carbon-free microphone to use inside the suit and avoid any possibility of spontaneous ignition.

The helmet visor used three layers of glass: one unbreakable, one with an ultraviolet filter, and an opaque infrared exterior.

Herrera soon realized that the problem with a pressurized suit in a near-vacuum environment was actually removing excess heat produced by the human body.

A cloak made of reflecting material would protect the stratonaut from solar and cosmic radiation.