
I’ve tried both the 3mm and 5mm versions of this wire and have found the 3mm width to be perfect for masks. The 5mm wire works but it’s harder to get a good seal with it. The 3mm width is sturdy enough to maintain shape but easier to bend to the contour of one’s face. I use a 6.5” length along the top of each mask.Update: my skinny son says 6.5” is too wide for his narrow face. I’ve made masks with 5.5” of wire and had no issues with fogged glasses. I’m currently making a batch of masks with 5” of wire; that’s the width my son determined to be optimal for his face. The nice thing about having a roll of wire is I can easily customize or experiment with different lengths.I like this wire so much I’m back to buy more rolls. Besides using this in the masks I make I’ve given lengths of wire to coworkers so they can retrofit their ill-fitting masks.Update 2: I’m buying more wire because my coworkers have said the masks with this wire are the best they’ve worn and keep asking for more masks for themselves and family members. My son is probably moving back to the dorms at his university next term and I want to make sure he has plenty of masks to take with him as well.

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