Very good product.
nice xd
very smart system. make it easier to breath under mask. still tight and safe mask. this is a must use for me now. feels wrong using mask without. so watch out 😀
very effective
fast delivery and good quality face mask support frame
Takes some getting used to.
Received today.
These things are perfect for under your mask. Gives you more space to breath
fast shipping,ok
Sve je ok.