Blackrapid RS-Sport Camera Strap
Description (from B&H): The black RS-Sport Extreme Sport Strap from BlackRapid is designed to be worn under your right arm and hold an SLR camera and lens steady in strenuous shooting situations. Slide the camera up the strap to grab that perfect shot. The strap has an under arm safety tether that keeps the camera secure. It includes a CR-2 connector-2 (1/4″-20 fastener), FR-3 fastener-3 and a BRAD MOD that secures the camera to the strap.