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Green valves can be ordered for our masks. They are ideal for multiple users. 1 valve per user. These can be sanitized, but canot withstand autoclave procedures.
Mask fits well. The fitting instructions are spot on. Thanks EXCEL
I was at the Austin meeting I have been taking it for a couple months I feel it makes my memorizing better
Thank you so much! Quick delivery and free delivery!
Easy to use.
First time to purchase this and it is easy to work with.
