The SST track suit has been a long-standing staple of adidas history. Like all good things, it has evolved, and today continues to be an Adicolor favorite. These SST track pants make it clear why — they have the recognizable silhouette, the forever iconic 3-Stripes and adidas Trefoil for the perfect tinge of sports nostalgia. The look has stayed pretty solid over the years, but one thing that's changed is the fabric, which is now made out of recycled and renewable materials.