Altura: 12L seatpack for those long distance bikepacking adventures Flexible pack for lightweight bikepacking or heavyweight commuting. Engineered to fit around the seat post whilst providing adjustability for different seat configurations. Lightweight and fully waterproof, the Altura Vortex Compact Seatpack is the ideal way to keep gear out of the wayIt has a reliable roll top closure giving adjustable capacity up to 12 litres and is designed to cater for individual needs with lash points so you can store extra items externally as well.The welded seam construction and Hyperlon reinforced areas have given it a waterproof rating of IPX 6. This means it can sustain heavy rain for long periods, making it suitable for all types of cycle travel. The stylish design finished with highly-effective reflective detailing to help improve visibility. Fully waterproof to level IPX6LightweightWelded seam constructionRoll top closure for adjustable volumeHook & loop wrap mounting systemHyperlon & Hook mounting systemHyperlon reinforced areasElasticated cord systemKross side release bucklesStructured inner supportReflective detail