The joby pro sling strap s l is designed for digital slr users that need a comfortable and secure strap thats simple to adjust when shooting on the move the innovative design of the pro sling allows you to adjust your cameras position in one simple fluid motion thanks to the unique speedcinch pully system the speedcinch system features two modes a quick draw mode for instant access to your camera to ensure you dont miss a moment and a locked mode which keeps the camera locked in one pos