Add dynamic resistance training to any rehab or workout protocol with these cloth-wrapped resistance bands. Each band features colored rubber and cloth labels to indicate the strength rating of the band. High quality steel carabineers are attached on both ends of the band. Whether you're using Iron Neck or RX Training, these bands are designed to fit into any routine. Resistance bands scale in difficulty the further they are stretched. Iron Neck resistance bands are each 3 feet long and stretch to 9 feet.