fritzoids<p>ordered some SIP valves 2years ago & haven't used them ever. I've been invited to a friend's birthday party this Saturday. Because I intend to stay <a href="https://mas.to/tags/MaskUp" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>MaskUp</span></a> , I've installed one of the valves in a ZimiMask. I've tried drinking out of it and it works really well (I suspect the frame inside the mask actually supports the valve where other masks might give). I've also done a DIY fit test (without the cover over the valve) & it passes! Huzzah!<br><a href="https://mas.to/tags/CovidIsNotOver" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>CovidIsNotOver</span></a> <a href="https://mas.to/tags/YallMasking" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>YallMasking</span></a> </p><p><a href="https://sipmask.com/" rel="nofollow noopener noreferrer" translate="no" target="_blank"><span class="invisible">https://</span><span class="">sipmask.com/</span><span class="invisible"></span></a></p>