Review (1/5): Buyer beware...bait and switch item.
Product description states it’s made of food grade silicone. Package insert states it’s made of polyethylene resins (plastic.) Before reading this I put one inside a cloth mask to try the fit. Now my face is red and itchy where the insert touched my skin. Product reviews are not related to insert but rather some sort of brush. Photos of inserts in the comments are not the same as those delivered.