Fishpond Flathead Sling Pack, The Flathead Sling combines both agility, and ease of use in one comfortable system. As fly fishers, we are constantly making adjustments to take advantage of the conditions we find on the water. The Fishpond Flathead Sling combines both agility, and ease of use in one comfortable system to give you unmatched access to your gear when you need it most. The sling’s ambidextrous design allows the pack to be carried on either shoulder with a quick flip of the strap. Its large clamshell opening and movable interior dividers offer tremendous carrying capacity and an organized work station. So, the next time you’re swinging streamers and turn the corner to find rising fish, you won’t have an excuse.