The Zpacks Super Nero 50 is a high-capacity frameless backpack with a modular and interchangeable shoulder strap system that lets you swap between fastpack-style vest shoulder straps or conventional shoulder straps using the same pack bag (See this video for instructions). We tested the fastpack style shoulder straps, which let you keep water, food, and … The post Zpacks Super Nero 50 Backpack Review appeared first on SectionHiker.com.