For the ultralight backpacker who doesn't want to give up everything, the Gossamer Gear Mariposa 60 delivers. The pack has a removable internal frame, load lifters, and seven pockets designed for flexible storage. And it weighs just two pounds. The large mesh exterior pocket allows you to store wet items, and the extra long side pocket is perfect for storing an ultralight shelter. Made of silky smooth, durable custom 100 and 200 denier Robic nylon fabric.