Long, soft cotton scarves...
1. Very long cotton scarves, just thick & soft enough they won't chafe skin. 2. (Or thick, soft robe belts, a combination?)
Of course be careful so they don't knot without a lengthy "bowtie" & long pullcord to undo it fast
so the lee isn't stuck in case of emergency, so you can always easily pull the knot loose...
(Not shoelaces, I doubt those would be comfortable,

but the same idea for a long, easily-undone bowtie).
3. I also once saw an illustration of a gent (holding or sitting upon, next to) a woman's ankles, with a long towel entwined between & around them,
and he was sitting on the towel's ends so her feet were trapped. No knots necessary. Such a simple concept & so easy to undo.
