Sling Retainer Bands 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 the SIERRATAC Padded and Non-Padded Slings. The bands are colored matte black and have a low-reflective surface. Mfg: Spiritus Systems