Gossamer Gear Mariposa 60 Backpack - GreenPerhaps Gossamer Gear's most famous design, the Mariposa 60 Backpack is a carefully considered ultralight backpack that cuts the weight but not the details. It's crafted from a hard wearing fabric called Robic nylon which is renowned for its exceptional strength to weight, with Gossamer's removable PVT frame keeping things stable but never clunky, pivoting with your body for comfort out on the trail. With 60L of space, it's a bit bigger than most