Worn once, washed and hang dried. Excellent like new condition. Burn extra calories with built-in resistance bands. Shape & Tone Your Muscles, Anywhere, Anytime. Light Resistance Applied to Every Step. Award Winning, Yale Tested. The patented built-in resistance will engage and activate your muscles while you go about your day, giving you better results and a toned look. Made with premium-quality, breathable, and stretchy fabric, these leggings are perfect for any activity, from running and cycling to yoga and neighborhood walks.