Riller & Fount Elsa Criss Cross Mini Dress in Black. - size 2 / M (also in ) Riller & Fount Elsa Criss Cross Mini Dress in Black. - size 2 / M (also in ) 95% modal 5% spandex. Dry clean only. Unlined. Front cross strap details. RILL-WD614. H16 ELMN. Back to basics this fall with Riller & Fount. Simple silhouettes and dramatic colors are perfect for any season.