Cord Locks Non Slip Stopper Silicone Toggles Buckles for Elastic Band Adjustment 100 Pcs Flat Round Black

These are great once you figure out how to use it. There's a tool which makes it very helpful. You just put it through the hole of the white piece and pull the string through for the mask and then you can move it back and forth to make it looser or tighter whichever you need. It works great I love them I will be ordering more when I run out

Works when the face mask is too loose. It comes with the tool to get the elastic parts in it easier. Make sure to check the rubber everytime you take off the mask as they come out easy same way they go inside.

Love this! It’s so easy to thread elastic for my masks, plus soft. I was using plastic “beads”.

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The cord locks as small so don't bother me on my mask but they do a really good job of keeping it sized right.

Great for adjusting the elastic lengths on your mask - easy to fix in place with the crochet hook provided. Only needed 4 so I have lots to spare!

Great for tightening my masks

Brilliant little beads. Just the thing for bespoke fitting of face coverings.

Perfect for adjusting masks, glasses etc. EASY THREAD NEEDLE INCLUDED, which was a bonus

Just what i needed for my face masks as they are too big