Retro style, defined and amplified. The SST track jacket debuted on the court in 1979, when it quickly became an essential for tennis training. It's made in the original sporty polyester fabric that's smooth inside and out and just slightly stretchy. The Adicolor collection: inspired by adidas heritage, Adicolor is authentic but modern. Iconic details: 3-Stripes, contrast piping and a Trefoil logo show off adidas pride. Two-way zip: multifunctional zipper for different styling options.