An arm sling includes a flat, elongated strap having a first end and a second end a ring structure attached to the first end and a double loop structure having a first loop and a second loop. The second end can extend through the first loop structure, then through the second loop structure, then back through the second loop structure, then through the first loop structure to define an arm loop and a remaining portion of the strap between the double loop structure and the second end. The second end can extend through the ring structure and attach to the remaining portion via an attachment element to define a shoulder loop.
