The Spiritus Systems Sling Retention Bands are sold in packs of four and manufactured out of UV-resistant EPDM rubber. - The bands feature an oversized side wall that maintains the bands elasticity intact after long periods of use. - The bands are built to fit securely on most rifle fore-ends with enough expansion room for your sling. - The bands are colored matte black and have a low-reflective surface. If you are ordering for a MIL/LEO unit, please visit our GOVERNMENT SALES page for further info.