Chiffon button down shirts made of chiffon fabric, it is silky soft, lightweight and breathable, comfy to touch and wear, US SIZE: S=(US 4-6), M=(US 8-10), L=(US 12-14), XL=(US 16-18), 2XL=(US 20-22). The button up long sleeve blouses is great choice for daily look or work outfits, party,concert, vacation, travel, school, company, office, holiday, beach, shopping, street or dating. It is suitable for both casual and formal occasion in fall, spring, winter and summer.