The Rynox Stacker is part of the Modular Stormproof Luggage System — a lineup of dry bags that provide water-resistant storage with a stormproof roll-top closure and heat-welded seams for robust weather protection. With a 20-litre capacity, it’s spacious enough for overnight gear, wet weather essentials, or bulky items that don’t fit in compact tank bags or backpacks. The bag attaches securely to any motorcycle using adjustable quick-release straps, and can also convert to a backpack with the included shoulder straps.