Bobi Linen Jersey Y Back Hoodie in Black. - size S (also in ) Bobi Linen Jersey Y Back Hoodie in Black. - size S (also in ) 80% linen 20% poly. Hand wash cold. Marled knit fabric. Attached hood. Split surplice back. BOBI-WO231. 576 37503. Bobi is an LA-based line of dresses and tees made from some of the highest quality jersey at an affordable price.