The manufacturer has a website where he explains that he builds and sells these masks but unfortunately he does not speak english: I asked him in an email for additional info and photographs but he never replied. When you speak portuguese then you could give it a try yourself, his contact info is:
Luiz Stefani
Dive Helmet - Manutenção e Reparos
E-mail: contato@divehelmet.com.br
E-mail: stefani.dive@yahoo.com.br
Telefone: (22) 2622-6276 | (21) 8140-6535
Nextel: (22) 7811-2815 | id: 124*75544
Condominio Village do Pontal
Rua 3, Casa 159 - Prainha
Arraial do Cabo - RJ - Brasil
Cep.: 28.930-000
