Maybe one of these similar products would be of interest:-
FIGHTR® Ankle Strap (Padded) - for Cable Machine - (2 Pieces) Leg Cuffs for Women and Men
Barbell Pad and Single Ankle Strap Set
Dumbbell Foot Ankle Strap Ankle Weights Tibialis Trainer Home Gym Leg Workout
Lekaro Weighted Vest & Wrist/Arm/Ankle Strap Unit Without Weights
Ankle Weights Monkey Feet Weight Lifting Adjustable Weights Dumbbell Ankle Strap