Quick Dam Jumbo Flood Bags absorb, contain, and divert problem flood water. These Quick Dam sand-less bags activate when wet and have an inner absorbent that turns to gel and creates a barrier. As they grow when wet and shrink when not in use, these flood barrier bags can be reused for months. You can use them indoors and outdoors, but these Quick Dam flood bags are best used outdoors to prevent flood damage.Free from Manufacturer defect

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