Designed to be worn untucked, our slightly oversized shirt has a relaxed fit that's just so, well, easy. Made of Japanese neppy cotton denim, this popover style features vintage-inspired side entry chest pockets—perfect for resting your hands or storing your valuables. Relaxed fit. Madewell Denim Easy Long-Sleeve Popover Shirt - Size M Body length: 30". Cotton. Machine wash. Import. Select stores.