This is the ankle-mounted type. I used it for wing foiling for several months, but I'm switching to a waist-mounted type, so I'm putting this up for sale. 【Maximum Length】10 feet (305cm) 【Cord Diameter】0.7cm 【Weight】250g 【Material】TPU ■ The stretchable coil cord extends up to approximately 305cm. ■ The base of both sides rotates 360 degrees, making it difficult for the cord to tangle or twist. ■ The fit ring that wraps around the ankle is soft and comfortable to wear. The size can be adjusted with Velcro.