Eight Resistance Levels: Our products are available in one pack and three packs to choose according to your needs. Different colored exercise band offers different strengths, yellow band (5-10 lbs); Pink Ribbon (10-15 lbs); Red Band (15-20 lbs); Blue Ribbon (20-25 lbs); Purple Ribbon(25-30 lbs); Green Band (30-35 lbs); Black Band (35-40 lbs); Army Green Ribbon (40-45 lbs). All bands are the same length (47.25 inches). High quality materials: The fitness band is made of natural latex, is non-irritating and odorless. This durable and high-quality material is more resistant to abrasions and tears to withstand the rigors of professional use. Tube Fitness Bands: They take up minimal space, so you can use them at home while you're at home watch TV. It can be rolled up to pack in a gym bag, suitcase or overnight trip, making it perfect for travel, gym or home use. Exercise Bands With Door Anchor: The door anchor is made of dense but soft foam and can secure your bands anywhere even if there is considerable room at the top and bottom of the door. This feature greatly increases the number of exercises you can perform. Improves The Core: In addition to strength training, resistance bands improve the strength and definition of your core muscles. Perfect for fitness, yoga, pilates, workout and strength training at home, as well as other outdoor or indoor activities.