Susie wall climbing by @OtterMiikun

Drawn in March 2021, here's my OC Susie doing a 'wall climb', on a background that I would later expand and use for other characters, as part of a YCH-type series.

I know that rock-climbing gyms typically rent special climbing shoes to patrons, but I have seen portable rock climbing walls at community festivals, and many who went to those would often climb them barefoot.