Hello,
By adding the classname "large" to the "DL" with the classname "hikam_options", the width will change from 120px to 180px.
Afterwards ; it might be more interesting to use some custom CSS and set the width you need for that specific page, thanks to the ID of the container.
Regards,
Jerome - Obsidev.com
HikaMarket & HikaSerial developer / HikaShop core dev team.
Also helping the HikaShop support team when having some time or couldn't sleep.
By the way, do not send me private message, use the "contact us" form instead.