![💉Josh Rubin, MD 🩺 on Twitter: "Non-Rebreather Mask 60-95% FiO2, depending on the flow rate and tight seal on the face A simple face mask with an oxygen reservoir bag. Flow must 💉Josh Rubin, MD 🩺 on Twitter: "Non-Rebreather Mask 60-95% FiO2, depending on the flow rate and tight seal on the face A simple face mask with an oxygen reservoir bag. Flow must](https://pbs.twimg.com/media/EHAXUeHWkAcLsPw.jpg:large)
💉Josh Rubin, MD 🩺 on Twitter: "Non-Rebreather Mask 60-95% FiO2, depending on the flow rate and tight seal on the face A simple face mask with an oxygen reservoir bag. Flow must
![Amazon.com: 3 Pack Oxygen Mask for Face Adult with 6.6' Tube & Adjustable Elastic Strap - Size S+M+L : Health & Household Amazon.com: 3 Pack Oxygen Mask for Face Adult with 6.6' Tube & Adjustable Elastic Strap - Size S+M+L : Health & Household](https://m.media-amazon.com/images/S/aplus-media-library-service-media/eed01146-7117-4d42-8f9c-133c9e09a0e7.__CR0,0,970,600_PT0_SX970_V1___.jpg)
Amazon.com: 3 Pack Oxygen Mask for Face Adult with 6.6' Tube & Adjustable Elastic Strap - Size S+M+L : Health & Household
![Amazon.com: 2 Pack Oxygen Mask for Face Adult with 6.6' Tube & Adjustable Elastic Strap - Size M : Health & Household Amazon.com: 2 Pack Oxygen Mask for Face Adult with 6.6' Tube & Adjustable Elastic Strap - Size M : Health & Household](https://m.media-amazon.com/images/S/aplus-media-library-service-media/fcb8f8c2-febd-4871-967b-4d6cb1dfb850.__CR0,0,970,600_PT0_SX970_V1___.jpg)