Allen Denali Neoprene Cartridge Sling With Swivels solves sling slips and keeps reloads close at hand. Finally a sling that stays put! The Allen Denali Neoprene Cartridge Sling features a tacky "sharkskin" back to hold fast on your shoulder, solve the slipping and sliding struggles you're used to dealing with on traditional slings. All with a nice wide shoulder pad that won't dig in as the miles pile up AND 5 cartridge loops for fast reloads.