The updated Petzl BUG is a streamlined 18-liter backpack designed specifically for multi-pitch rock climbing. Its ergonomic, low-profile shape sits high on the back to allow easy access to your harness gear loops and chalk bag while climbing. The pack features a fold-away waistbelt for a clean profile and a dedicated rope carrying strap on top. Optimized for carrying a hydration system, guidebooks, and approach shoes, it offers maximum freedom of movement in the shoulders for technical routes.