BB0331SK by Balenciaga. Color: Gray / Silver, Black / Gray, Size: 56-16-140. Keeping the lettering logo as the main character, an evolution of the Flat concept has been introduced: the Paper. Rectangular easy to wear shape in HD Acetate are characterized by bent endpieces. Bold temples enriched with Balenciaga lettering logo. Keeping the lettering logo as the main character, an evolution of the Flat concept has been introduced: the Paper. Rectangular easy to wear shape in HD Acetate are characterized by bent endpieces. Bold temples enriched with Balenciaga lettering logo.