Theory Etiennette Blazer in Good Wool | NWOT, Size 4 This Theory Etiennette Blazer is a modern classic and features a flattering tailored silhouette with a single-button front, peak lapels, and a feminine fit that cinches slightly at the waist. Perfect for work or elevated everyday style. Size 4. Fabric: 96% wool, 4% elastane for a comfortable fit. New without tags - purchased and no longer fits me. Ships fast from a smoke-free home!