Altura vortex 2 waterproof seatpackthe vortex 2 waterproof seatpack from altura is ideal for touring, trekking and bikepacking adventures. It's engineered to be lightweight, durable and waterproof while also featuring a roll top closure, hypalon reinforced and structured inner support, and secure kross side release buckles.lightweight, waterproof and durable seatpackengineered to fit around the seat post whilst providing adjustability for different seat configurations this lightweight, and fully waterproof altura vortex 2 seatpack is the ideal way to carry gear on the frame when bike packing or commuting. Designed to cater to individual needs by providing lash points and a light attach slot, as well as a roll top closure giving adjustable capacity. Features dimensions 44 x 20 x 20 cm fully waterproof to level ipx6 welded seam construction roll top closure for adjustable volume hook loop wrap mounting system hypalon reinforced areas and structured inner support kross side release buckles and elasticated cord system structured inner support reflective detail weight 350gbuy altura accessories from chain reaction cycles, the world's largest online bike store.