Both parts of bag are rolled. Seals so very water tight but probably not submersible for long times. But that's not how these are used, not on a kayak. It is possible to stack other elements on top besides the map case with the quick connect.Mounting is by straps with a garter like assembly. Four quick connect snaps allow removal and easy reattachment. I was able to use the straps directly to.
Frame members on my F800 and did not use that part. Which also allowed quick on/off transfer. The tank on my R1200 seems higher and I no longer use a tank bag. A carrying strap is included for carry into motel. Never used it as we parked close to tents or doors.
The item "Ortlieb waterproof motorcycle tank bag" is in sale since Saturday, March 14, 2020. This item is in the category "eBay Motors\Parts & Accessories\Motorcycle Accessories\Luggage\Tank Bags".The seller is "rhettdoc2010" and is located in Sioux City, Iowa. This item can be shipped to United States, Canada, United Kingdom, Denmark, Romania, Slovakia, Bulgaria, Czech republic, Finland, Hungary, Latvia, Lithuania, Malta, Estonia, Australia, Greece, Portugal, Cyprus, Slovenia, Japan, China, Sweden, South Korea, Indonesia, Taiwan, Thailand, Belgium, France, Hong Kong, Ireland, Netherlands, Poland, Spain, Italy, Germany, Austria, Bahamas, Israel, Mexico, New Zealand, Philippines, Singapore, Switzerland, Norway, Saudi arabia, United arab emirates, Qatar, Kuwait, Bahrain, Croatia, Malaysia, Chile, Costa rica, Dominican republic, Panama, Trinidad and tobago, Guatemala, El salvador, Honduras, Jamaica, Aruba, Belize, Dominica, Grenada, Saint kitts and nevis, Turks and caicos islands, Bangladesh, Brunei darussalam, Bolivia, Egypt, French guiana, Guernsey, Gibraltar, Guadeloupe, Iceland, Jersey, Jordan, Cambodia, Liechtenstein, Luxembourg, Monaco, Macao, Martinique, Nicaragua, Pakistan, Paraguay, Uruguay, Russian federation, South africa, Colombia, Antigua and barbuda, Saint lucia, Barbados, Bermuda, Cayman islands, Sri lanka, Maldives, Oman, Reunion.