Innovative materials and a slow, sustainable approach to design are what set ARCS's bags apart. The HEY Bag has fast become the signature style of this London-based label, taking the form of an oversized sling bag that's perfect for everything from grocery runs to weekend getaways thanks to its generous size. The 'Sea' version of this bag features an all-new material made from a polyester-nylon blend yarn that has a mesmerizing, iridescent appearance. The shoulder strap is adjustable and features a branded metal buckle, and the body of the bag can be fastened with drawstrings to adjust its size on the fly.