Bests & Worsts Reviews from Amazon

My colleague and I bought all the full face masks available and reviewed each of them. I have the task responsibility to find full face masks to introduce and educate hundreds of young people of Florida to the underwater world. Could not only rely on reviews for such an important choice. After my colleague and I tested all 13 full face mask found on Amazon, all of them except the EasyBreath or the Mares make you re breathe some of your expelled air because of core design flaw. Because of low quality standards, I found plastic residue in almost all the masks (check photo) 8 of the brands (seaview 180°, segmart, vaincre, jogoo, ocean view, easy snorkel, octobermoon and fnova) sell the exact same model, all coming from the same chinese factory, with the same piece of instruction and obviously, the same flaws. I found it difficult to contact the sellers as almost none have a website, are all located in China (except one). None of them appear to have any history or expertise in snorkeling and sporting goods. Who would I turn to in case of a problem ? Review of model n°2068(G) (One review for all 8 brands because they are all the same mask…) Pros : 1-It’s cheap, between $50 and $20 cheaper than the Tribord Easybreath, dangerously cheap.. Cons : 1-IT MAKES YOU RE-BREATHE YOUR EXPELLED AIR The channel for expelled air is only separated from the inhale channel by a thin, moving layer of rubber (check video), so when you press your face against it, the layer moves and let some CO2 get in your breathing area. This can cause CO2 poisoning, I invite you to check the symptoms on wikipedia, nobody wants that. I found some reviews on the seaview and others saying people felt dizzy and lightheaded, just found the scientific explanation. 2-IT EXPOSES YOU TO POLYCARBONATES RESIDUES Most of the masks came in with plastic residues in them, the worse was the Easy snorkel (check photo). Most of the residues are located in the breathing area, this is an absolute NO GO for me, I don’t even understand how they can be sold in the US with the poorest ever Chinese quality standards. Even more when you are supposed to breathe through it in water. 3-IT FOGS For the same reason you breathe your own CO2, the mask fogs. With the dysfunctional air channel, the humid expelled air gets back on the lens and make it fog. 4-WATER COULD COME IN THE SNORKEL The “Vaincre” brand (same model M2068G) came with a broken dry top system, the little ball was split in half, if it happens when you in the water you will be breathing water. This is reported on many other reviews of the Seaview, Segmart and Vaincre (did not check the other’s reviews, too tired of seeing always the same stuff) Jigga_drs on July the 10th had the exact same surprise with the Segmart. 5-CAMERA MOUNT TOO HIGH The least important flaw, the camera mount is too high to take good shots in my opinion, it gets the camera above water too often and requires that you tilt your head to keep it submerged. The camera flow is of course not critical however the 4 other flaws are serious safety concerns