"Welcome to the HEV Mark IV Protective System, for use in hazardous environment conditions."
I present to you the HEV suit from Half-Life.
(a UI, don't know what else to add to it)
DOWNLOAD : http://www.mediafire.com/file/mrt9l0tk3r1bo7t/HEV_Suit_MK_IV.rar/file
If there's any problems with the model, please let me know.