(TrendHunter.com) Stüssy joins forces with Birkenstock on a Boston collaboration, spotlighting one of the most iconic silhouettes by the footwear expert. The duo are no strangers to one another, having worked... (TrendHunter.com) Stüssy joins forces with Birkenstock on a Boston collaboration, spotlighting one of the most iconic silhouettes by the footwear expert. The duo are no strangers to one another, having worked...