Roxy snowboards are made in the USA by Mervin Manufacturing. If your not familiar with Mervin Manufacturing may-be you'll know them by the other brands they make - Lib Tech, GNU and Bent Metal are all snowboard brands made by Mervin Manufacturing.
Which means that Roxy Snowboards are actually made by people that do know a thing or two about snowboards and snowboarding. Mervin makes snowboards for Roxy because Roxy snowboards is a sister to Mervin due to the fact that they were purchased by Quiksilver in the late 1990s. Roxy Snowboards is the only snowboards brand that is only for women and Mervin is using Magna traction and banana Tech in the Roxy snowboard designs. So things like narrower waist widths for smaller foot sizes and more flex, should come naturally to them. Roxy Snowboards sells a few different snowboard models like Roxy Sangria Snowboard, Roxy Silhouette Snowboard and Roxy Sugar Snowboard. They all(especially Silhouette) come in different sizes and designs.