Introduction: Membranous aplasia cutis congenita (MACC) is the most common clinical subtype of aplasia cutis congenita (ACC). It is typified by a localized skin lesion devoid of hair and features a membranous surface. While most MACC individuals do not present with concurrent abnormalities. it can sometimes co-occur with additional physical anomalies and various malformation syndromes. https://www.adventuresonabike.com/product-category/bucket-hat/