From heavy duty metal clasps and #10 YKK zippers for the 1050D Urethane coated Dupont ballistic Nylon, its as difficult as freight teach. even though we favor the 40L versions of Osprey’s Farpoint and Fairview packs https://hassannrdt934931.get-blogging.com/28705242/the-definitive-guide-to-best-travel-backpacks