Thinking you could braid some of that into a mean slingshotI bought 10 metres of 1/4 inch elastic at the start of the pandemic from Amazon... cost pennies..
.... https://www.amazon.co.uk/gp/product/B00SHQSKC4/ref=ppx_yo_dt_b_asin_title_o07_s00?ie=UTF8&psc=1
One of my co-workers...his mom made some that had a liner inside of a material & used the material to make ties & it has both sides open to insert a filter.What type of fabric are you using, to make them the most effective as is easily possible?
Are you using any additional filter of any type, in between the layers, or in an inner pocket?
I would love input from both of you, and anyone, about what to utilize.
(If those are coffee flavored I'll take a hundred.)
Glad you like it, it is when I get up in the morning the coffee is made, I have some and then put it on for my morning walk with the dog. Later the mask changes design. Red bandana.(If those are coffee flavored I'll take a hundred.)
I read material from quality t-shirts is good for keeping out things.