They are lightweight, easy to carry and great for home, gym and travel. These Resistance bands are extremely versatile. Great Crossfit Training, Yoga, Pilates, Beachbody, Physical Therapy, Strengthening, Toning Upper and Lower body. You can also isolate and target glutes, legs, hips & knees. Tubes are made up of Latex material while handles are made up of Polypropylene.