The Bloc shape offers an innovative way to help you pack more efficiently inside your pack. Compared to a round shape, the bloc fits better into the corners of your pack, eliminating all the “dead air” that can happen when you try to pack with round stuffsacks. These stuffsacks are designed to easily compress lofty items such as sleeping bags and clothing to a nearly rock solid state. The unique design evenly distributes the stress of compression and prevents bulging. Colors: Assorted