The Altura Dryline 2 Rack Pack is engineered to be incredibly durable for tough adventures as well as the regular commute. This rackpack is the ideal waterproof all-rounder. The Dryline™ Technology keeps your gear dry. Altura Dryline 2 Rack Pack Features Altura Dryline™ patented waterproof construction Altura Darkproof® Technology offers superior retroreflectivity PE board provides a hardcase feel Quick release landing strip Altura Transformer shoulder strap