A structured, fitted base fabric through the body and shoulders gives way to a soft, sheer lace ruffle at the hem and cuffs — the contrast is the point, so treat the two zones differently. Hand wash cold, keeping the lace flat and unwrung, and hang to dry away from direct heat. Avoid wringing or twisting the lace sections in particular, since the open floral weave can distort or snag if it's handled roughly while wet, and store the blazer on a padded hanger so the ruffle doesn't crease.