Birkenstock 1774 is the meeting point of tradition and modernity, combining the iconic brand's signature quality and craftsmanship with collaborative partners who share an appreciation for design and production. Crafted from organic cotton with a lightweight poplin weave, the Sleeping Shirt a longline silhouette that's cut to an oversized fit.,Birkenstock 1774 is the meeting point of tradition and modernity, combining the iconic brand's