Arrow down-up

<svg width="1em" height="1em" viewBox="0 0 16 16" class="bi bi-arrow-down-up" fill="currentColor" xmlns="http://www.w3.org/2000/svg">
  <path fill-rule="evenodd" d="M11.5 15a.5.5 0 0 0 .5-.5V2.707l3.146 3.147a.5.5 0 0 0 .708-.708l-4-4a.5.5 0 0 0-.708 0l-4 4a.5.5 0 1 0 .708.708L11 2.707V14.5a.5.5 0 0 0 .5.5zm-7-14a.5.5 0 0 1 .5.5v11.793l3.146-3.147a.5.5 0 0 1 .708.708l-4 4a.5.5 0 0 1-.708 0l-4-4a.5.5 0 0 1 .708-.708L4 13.293V1.5a.5.5 0 0 1 .5-.5z"/>
</svg>