This is the full version of a 2 part video series titled "Gassing Sierra!" This features both the "medical" and "damsel" parts in one video at a reduced price. In the medical portion, you put an oxygen mask on Sierra's face with gloved hands as she begins to breathe from it. Deep breaths that fog up the mask so well. She eventually pulls the strap over her head securing the mask as she continues to breathe. After that, she is lying down ready to be given "the gas" by you. This excites her by you holding the mask on her. She eventually becomes excited enough to give you a handjob offscreen before you come on the mask. In the "damsel" video, a scene is shot two seperate ways. Both include you, Sierra's coworker at a chemical plant begin to gas her as she's putting her PPE on. In the first video, you have a full range of view as you see her wearing a gray tshirt before spraying her repeatedly. In the second part, the video is shot behind the view of a 3M full face respirator. Sierra dons a protective suit but isn't able to don her respirator in time before you start gassing her. Both videos play out the same way with lots of coughing.