I exploit to carry a Gregory Jade 62L pack (too many handy pouches/pockets that temped me to “things them”; carrying the minor extras to assuage my trail fears. (Obtained at REI and was coached by a highly skilled backpacking personnel.) Exterior straps can be used for attaching goods for example https://walkingsticks54208.dgbloggers.com/34708877/the-greatest-guide-to-annapurna-circuit-trek