Nylon compression bag - M - SEA TO SUMMIT The M nylon compression bag is durable and waterproof. It can compress its contents, sleeping bag for example, up to a third of its initial dimensions. A real ally to save space in your backpack or travel bag. TECHNICAL CHARACTERISTICS OF THE NYLON M COMPRESSION BAG: - Material: 210 denier nylon. - Volume size M / 14: 4.5 L. - Weight: 156g. - Assorted colors.