Altura: Answering the needs of stability, versatility and quick release, the Altura Vortex Dropper Seatpack has it all. A specially engineered Rixen Kaul Klickfix fitting embedded into the welded waterproof construction provides an easy to remove and attach carry solution which keeps the valuables protected from the elements whatever the weather. The roll closure and bungee cord features also allow for the Altura AnyWhere Drybags to be attached increasing carry capacity for different adventures. Max load including bag 2kg.Please note the roll closure must be rolled 3 times to ensure a waterproof closure. Whilst the waterproof fabric and welded seams provide protection from the elements, this product is not submersible and should not be left sitting in water. We recommend valuables or electronics should be secured in a dry bag inside the main body of the bag for extra security.This Rixen Kaul Klickfix system has been designed to work in combination with most dropper seat post configurations however we recommend checking sizing and clearance before use.