S. Leather ft. Climbing kit

This armor has been affixed with a climbing
harness around the midriff, comprising leather
straps and quickdraws. While wearing it, you
make Strength (Athletics) checks to scale vertical
surfaces with advantage when using a rope or
similar aid.
Made from tough but flexible leather, studded
leather is reinforced with close-set rivets or spikes.
While wearing this armour your
AC equals 12 + Dex