How to assemble the double strap system

Our masks are shipped fully assembled with the strap system already in place. No assembly is required upon delivery. These instructions are only for reassembly in case the system has been removed.

Upper strap assemble

Lower strap assemble


Identify the lower slot on the mask where the strap will be inserted:


Identify the thinner end of the strap:

Insert the thinner end through the slot from the inside of the mask to the outside:

Thread the folded end back through the slot to lock the strap in place

from the outside, it has to look like this:

Repeat the same process with the other strap:

Now, pass the end of the strap through the loop:

Repeat the same process with the other strap


Slide the end of the strap into the buckle


Insert into the right slot:


Pass it into the slot behind:



Pass the strap into the slot as the image:




Now, your mask is ready to use!





If you need any further assistance, please let us know support@metadox.pro