C4 CMAC River Fin Description
C4 Ambassador Charlie MacArthur is a year-round instructor in many mountain sports, so he’s C4’s go-to guy for all things mauka. CMac designed these low-aspect polypropylene fins for paddling environments prone to submerged rocks, snags, or shallow sandbars or reefs. Hit something unexpectedly? Don’t rip out your fin box or mangle epensive fiberglass fins - upon impact these super-bright-colored lightweight plastic CMacs fins are designed to pull out of the fin plugs and float.