REX "Recovery with Elastic eXercise" These bands can be used by anyone for almost anything: strength and conditioning, muscle toning, stretching, Pilates, weight loss, and rehabilitation. Each band is made to last and maintain their elasticity after years of use. They can be used to increase strength, mobility, flexibility, stability, and overall health and wellness. These physical therapist-approved, professional-grade bands can be used for everyday workouts and recovery. They come with their own carrying case, so storage is as simple as can be! đȘ FIVE COLOR-CODED BANDS:ăYellow - Extra Light - .7mm - 5-20lbsăăRed - Light - .9mm - 20-35lbsăăBlue - Medium - 1.1mm - 35-40lbsăăGreen - Heavy - 1.3mm - 40-45lbsăăBlack - Extra Heavy - 1.5mm - 45-50lbsă đȘ MULTI-PURPOSE: These bands have a vast array of uses. Use for strength training, mobility, flexibility, and much more! đȘ EASY TO USE: Fun and easy to use, perfect for any fitness level. Simply choose a resistance level to suit your workout! đȘ PORTABLE: Wonderful for use at home, the gym, on the go, and more. The carrying case makes them easy to pack around! đȘ PREMIUM QUALITY: Durable and built to last!