Lifeline Fitness Ankle and Wrist Attachments for Exercise Resistance Cables to Isolate and Target Muscle Groups The Ankle/Wrist Attachment is an interchangeable resistance cables accessory designed to use in connection with your Lifeline Resistance Cables for isolating hard-to-train areas of the body. Incorporate Lifelines patented, easy to use, interchangeable process to add/subtract resistance cables which allow the user to increase/decrease peak resistance from 10lb to 100lb. Attach to either your ankle or wrist and connect a Lifeline Resistance Cable to isolate and target muscles all over the body: upper body, core and lower body Adjustable in size for a safe and secure fit and they are padded for comfort Made using heavy duty nylon material in the construction to meet the demands of gyms, studios or a home. Innovative, patented cable pocket design allows for easy resistance changes