@ghhughes @RnInfection @AbraarKaran @masknerd Probably and/or cost. I think they still report a high fit test pass rate with the rubber straps. But the breakage problem is really quite bad.
@Ghughes@RnInfection@AbraarKaran@masknerd可能和/或成本。我认为他们仍然报告说橡胶带的配合测试通过率很高。但是破损问题真的很严重。