These innovative sandbags expands from a lightweight 200g while in storage into a hefty and secure 20kg sandbag in just a few minutes. Protect your home or business from floods and water damage by building a solid wall of defence, or moulding these sandbags to a doorframe or around corners of buildings. Thes bags come vacuum packed for ease of storage and are biodegradable when not needed anymore. This pack contains 20 portable, expanding sandbags.