I've had this Dakine backpack for ~17 years and have taken it on all my trips. The zippers on this thing still work like they are new. All my other backpacks have
Amazon.com: MATEIN 17.3 Inch Computer Backpack, Extra Large TSA Friendly Travel Laptop Backpack with USB Charging Port, Anti Theft Carry On Flight Approved Business Work College Backpack Bag for Men Women Gift :
Karluk 3000 Roll Top Dry Backpack | Vias – KUIU
DAKINE at suitcase Switzerland
DAKINE Heli Pro 20L Backpack - vintage camo | Tactics