hoppscotch/packages/hoppscotch-app/assets/icons/layers.svg

<svg
  xmlns="http://www.w3.org/2000/svg"
  width="24"
  height="24"
  viewBox="0 0 24 24"
  fill="none"
  stroke="currentColor"
  stroke-width="2"
  stroke-linecap="round"
  stroke-linejoin="round"
>
  <polygon points="12 2 2 7 12 12 22 7 12 2" />
  <polyline points="2 17 12 22 22 17" />
  <polyline points="2 12 12 17 22 12" />
</svg>