Bobi Jersey Jogger in Black. - size M (also in XS) Bobi Jersey Jogger in Black. - size M (also in XS) 54% cotton 44% modal 2% spandex. Elasticized waist. Side slant pockets. Jersey knit fabric. BOBI-WP153. 547 26223. Bobi is an LA-based line of dresses and tees made from some of the highest quality jersey at an affordable price.