Wanted to know the source of the right image, for reasons, and it’s from this website that “teaches rope bondage, shibari and other rope-related BDSM skills”:

https://www.theduchy.com/

I’m not gonna get anyones hopes up like I did mine about good content there, the website is self described as “Our focus is on education, not titillation, so this is a safe place to learn techniques without distracting sexual images.”