Designed to meet the demands of different indoor and outdoor activities. Made out of durable fabric that won't snap under pressure. Ideal for increasing strength, endurance, adding muscle-building power, and more. Suitable for both beginners and advanced Gym Goers. Come in 4 resistance levels, color-coded from light to extra-heavy. They provide a wide range of resistance, from 5 lbs. to 80 lbs. They can be used alone or combined, adjusting the amount of resistance needed for each individual. Not made of rubber latex, so there is no rubbery odor - just a refreshing new scent. Lightweight, portable, and easy to store - they can be used everywhere. Instruction manual included for exercises.