For Days Black Organic Cotton Poplin Maxi Dress w/ Adjustable Straps. Size XL. New with tags. Description: The Organic Poplin Maxi Dress is the breezy, summer dress of your dreams. This ankle-hitting dress has adjustable straps, tiered silhouette, and an airy feel. Can be dressed up or down. Top is tight enough to be strapless if you prefer.