Ortlieb Elevation Pro 42 Rucksack Blue

The ideal mountain pack? Quite possibly. The Elevation Pro 42 is the classic, slender, climbing-friendly design, with an ergonomically designed back for comfort and stabililty... but which is waterproof!All the bits and pieces you'd expect are there: ice-axe/pole loops and various attachment points, side compression straps, and a top-loading design with a pocketed lid. Underneath that lid though, there's a waterproof roll-down seal which works with the waterproof fabric and sealed seams to keep your kit dry.