Madewell Signature Poplin Oversized Shirt in Blue and White Stripes Size XS Excellent Condition, No Flaws An oversized take on our signature tomboy button-up in classic vertical stripes. Forever perfect in cotton poplin, this is an ex-boyfriend shirt with a next boyfriend attitude. Slightly oversized fit. Do Well: We partner with the Better Cotton Initiative to improve cotton farming globally. Cotton. Machine wash. Import.