THE EQUIVALENT OF 9 TRADITIONAL SANDBAGS, JUST ADD WATER! Our BoomBags™ are designed to stretch the length of a larger doorway with each section sized to match that of a standard sandbag. Simply add water and you’ve got a near-instant impenetrable barrier. Efficient, easy storage. Ready to use off the shelf. Long shelf life. Easily accessible. Easy to use- just add water- no sand!