these are 2 versions of ankle strap (both tested, works a charm) for a s/m binding.
plus, to complete the set a toe strap (not tested yet, due to climbing injury)

ankle straps turns out surprisingly good, i find slightly comfier the first ones (flats) instead of the fancier and nicer last version… you choose.

i made it thinking about lacing it with some paracord or screwing in old plastic straps& buckles..  you can easily add your custom buckle mount.

the're not intended to be structural, then, you SHOULD have something (strap or cord), running from anchor point to buckle, but…. i found they actually hold up quite good with little flex so.. Your gear, you choose…