NSF Indira Ruffle Sweatshirt in Black. - size L (also in ) NSF Indira Ruffle Sweatshirt in Black. - size L (also in ) 100% cotton. Ruffled fabric detail. Banded edges. Raw cut hem. NSF-WO79. 20004 IWFT. Based out of California, NSF has caught the eye of many. With their clean design and boyish charm, NSF is recognized for its relaxed, modern style looks.