The Harbinger Padded Ankle Cuff has an Adjustable Velcro closure to customize and one size fits all fit. It´s designed for use with weight stack cable equipment to strengthen and tone leg muscles. The 4.5mm Neoprene padding protects ankle during training and makes it super comfortable. Designed with a Steel D ring that holds up to 750 lbs stackable weight. Looks like you´re in good shape.