The MidwayUSA Shotgun Sling with 15-Round Shellholder is an excellent way to carry both your shotgun and your spare ammo. The heavy-duty sling is impervious to the elements while the elastic shell loops hold an additional 15 rounds of 12/20 gauge ammunition with the gun at all times. Also, the quick detach locking sling swivels make attaching and detaching easy. FeaturesGrovtec Quick Detach Locking Sling Swivels Elastic Shell LoopsHolds 15 Shotgun Shells