In this episode of General Knots, we'll show you how to tie the Alpine Butterfly Loop. It's a reliable mid-line loop knot, most commonly used by mountain climbers.
In this tutorial we used Nylon Utility Rope: https://sgtknots.com/products/utility-rope-1-4-inch
You wouldn't want to use it for mountain climbing but it's a good basic, affordable, all-purpose rope that holds up well against the elements.