I got the Osprey Escapist 20 as a bike-specific pack, in large measure due to the internal pocket organization (which fits a variety of tools) as well as the brand's well-known helmet-carrying tab. But it's become my go-to daypack for almost any outdoor pursuit. The med/large model delivers 1,120 cubic inches of storage divided into two main chambers plus a deep top pocket for quick-grab items like sunglasses, a notebook, phone or snacks. The rain cover – smartly concealed in a bottom pocket via Velcro – saved my kit from getting completely drenched on countless occasions.