Newtra debuted in 2016 as a new shirt with a slightly different taste, expressing a work shirt with the sewing of a high-class dress shirt. This version 3 is the first open color in the series. The combination of the 1910s style asymmetrical V-patch pockets inherited from version 2 and the simple and relaxed open collar gives it a natural and fresh look. This open-collar shirt for adults has an attractive sense of moderation that creates a relaxed mood while not being too casual when paired with coveralls as well as jackets such as OK Rider. This piece is made of the basic indigo-colored cotton chambray fabric that Post O`Alls uses as a standard, making it more enjoyable to enjoy the friction with the dress-like sewing specifications.

The 2016 debut Neutra has a slightly different style made to express a workshirt using high end dress shirt construction and sewing. Version 3 is the first open collar version. The symmetrical 1910s style V patch pockets inherited from version 2 combined with the open collar give a natural fresh impression. OK Rider or coverall jacket work perfectly together and look relaxed without becoming too casual. Overall a moderate understated balance for an more adult open collar shirt.