Durable Materials:
Most of the scuba diving mask parts are made of polypropylene, which is an all around durable material. Its attributes include having a good chemical resistance, good fatigue resistance, good heat resistance, and tough, allowing the overall product to be long lasting.
The other predominant material in the scuba diving mask is silicone. This material is also quite tear resistant, helping the product retain a long lifespan.
https://www.bpf.co.uk/plastipedia/polymers/pp.aspx#properties
https://www.shinetsusilicone-global.com/catalog/pdf/rubber_e.pdf
Immediate Functionality:
The strength of this repurposed product is that it requires little disassembly. The initial scuba diving mask already has immediate functionality, as the mask itself already ensures an airtight seal, and controlled airways. All that is needed is the addition of an air filter to filter out the aerosols in the atmosphere. Given that 3D printing is a viable resource, this build is easy with little investment needed.
Inviting, Easy, and Obvious:
The repurposed design targets normal civilians who wish to implement a safer mask into their daily lives. As aforementioned in the research section, the conventional face mask is not completely safe, as it has flaws that allow unwanted aerosols to enter into the human respiratory system. The repurposed design helps to solve the existing issues by covering the entire face with an airtight seal provided by a scuba diving mask in an affordable manner.