The "A" ring can make the operating, heat dissipation easier and the smoothness higher to protect the fishing line, no matter how thin the fishing line is, breaking can be prevented
They come in handy for cleaning the inside diameters of various parts such as line guides, bearing housings, and the right hand sideplate where the drive shaft comes through
You can easily make your own out of lightweight closed cell foam, which would save a little weight
PROTECTED BY SCIENCE Trail Helmets: The Cularis Series For fast, flowy, trails
I had it fill up with water on my paddle board last weekend, but I didnt have the zipper closed all the way if you make sure the seal is good you can fill this bag with water, and it wont leak
8 total pockets, 4 interior