I've been searching for a long time for a backpack that would be suitable for both mountaineering and city breaks. I've ordered and returned everything I could think of. Shimoda, Peak Design, Tenba, LowePro, and many others. Many backpacks had great features, but there was always something wrong. And finally, this backpack combines all the advantages of different brands. And finally, THIS backpack COMBINED all the advantages of other brands into the perfect backpack. I bought the 20-liter version. But I think I'll buy the 30-liter one as well.