Storied sneaker brand K-Swiss reaches 25 years back into their archives to resurrect one of their most iconic models – the Si-18 International OG. A breakthrough in tennis footwear technology at the time, the Si-18 featured the brand’s Silicone Formula 18 technology (hence the name), technical D•R•Cinch lacing system and heel stability counter. The re-release of this classic tennis shoe is the first in a series of special colorway releases and collaborations set to roll out through 2015. This model has been built with the exact craftsmanship of the debut model in 1989, with flags on the heel and tongue representing each of the four host countries of the Grand Slam tournaments and the colors of the original release. Look for the sneaker now at select retailers.