The THERABAND Resistance Band Loop Set comes in a 3-pack with 18-inch length and 4-inch width, made of natural rubber material. It is designed for leg muscle group and suitable for home use, gym and training. The bands are available in multipack - 12 inch, medium-red, x-heavy-BLK, and heavy-GRN colors, providing medium, heavy, and x-heavy resistance features. The item weighs 0.25 grams, with item height of 8 inches, item length of 0.19 inches, and item width of 4 inches. The THERABAND Resistance Band Loop Set is a fitness equipment and gear used for resistance training. I ship out FAST via USPS Ground Advantage.