Introducing the Altura Vortex Waterproof Seatpack, new from Altura and jam-packed with some great features and notable improvements which includes improve stability and cushioning.Waterproof welded seam construction Polyamide ripstop fabric with TPU coating Bungee cord for extra storage (12L or 17L versions only) Compatible with Altura Anywhere drybags Adjustable volume via roll closureReinforced inner to prevent crushing against the seat postReflective detailLight attachment pointsAir release valveA fully waterproof Seatpack is essential for any bikepacking adventure, especially on multi-day trips where keeping your gear dry is highly important. This is where the Vortex Seatpack will see you right. Improved stability compared to the previous model with added cushioning and glove compatible buckles provides easy access when you need it. Its been engineered from Polyamide Ripstop with TPU coating it is fully waterproof with welded seam construction and comes in three generous size optio