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 HEY Sling is made from recycled plastic bottles that have been spun into a polyester fabric and piece dyed to give the material a rich sheen and a purposely non-uniform character that makes every piece unique. 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.