Japanese label SOPHNET. teams up with footwear and apparel maker visvim on a pair of Serra’s, which will be releasing on Christmas Day. The popular Serra model has been modified with a side zipper which allows the wearer to easily slip on and off the boots without the hassle of fiddling around with shoe laces. Coming in a navy blue colorway, the SOPHNET. x visvim Serra boots will retail for 56,700 yen and will be available at SOPH. stores on Decemeber 25th.