Bobi Vintage Jersey Knotted Tee in Mauve. - size M (also in ) Bobi Vintage Jersey Knotted Tee in Mauve. - size M (also in ) 65% poly 35% cotton. Heathered jersey. Front knot detail. Imported. BOBI-WS2097. B 31203. Bobi is an LA-based line of dresses and tees made from some of the highest quality jersey at an affordable price.