The Mystery Ranch Radix 47L Backpack perfectly toes the line between a gear-intensive daypack and an overnight backpacking bag. The 47 liters of internal space is just enough room for us to pack our lightweight backpacking gear or hold food, water, and layers on ambitious day hikes. The lightweight aluminum frame can be removed for maximum weight savings, allowing us to burn some rubber as we zoom along the trail, or can be left in for structured, stable support. The external side and back pockets all expand to accommodate larger items or can be compressed down for a sleeker profile, and the offset front panel zipper allows us to get a full view of our pack and quickly grab what we need without having to completely unpack.