Looking to tone leg muscles for a more defined look? Bionic Body by Kim Lyons Ankle/Wrist Strap is the most cost-effective way to add leg workouts to your existing resistance bands. Specially designed as a swappable add-on, this fully adjustable strap provides a total lower body workout. Add resistance to your daily workout and start building leaner muscles wherever you are. Works great with Bionic Body Resistance bands and door anchors.