https://www.cascoantiguo.com/en/scuba/diving-spare-parts-accessories/crotch-strap-adjustable-with-d-ring-tds
TDS ADJUSTABLE CROTCH STRAP WITH D RING FOR DIVING HARNESS
Polypropylene strap with plastic quick-release buckle, D-ring and plastic brake for length adjustment.
crotch strapd ringdiving harnesstdsadjustable