Water-Activated Flood Barrier Bags, 4 Pack, 1530 x 210 mm

Flood barrier bags activate with water to create a fast, sandless shield for doorways, garages, and basements during heavy rain or storm runoff. This 4-pack expands in about 10 minutes, rising to a 3–4 in barrier that helps block seepage and redirect shallow flooding. Built with high-density non-woven fabric, reinforced stitching, and a superabsorbent polymer gel core, they’re designed for quick placement, tight sealing under pressure, and cleaner storage than traditional sandbags.

• Delivers rapid expansion to 3–4 in (76–102 mm) to help stop water at doors, thresholds, and entry points


• Absorbs water fast with gel that expands up to 58x its weight for strong blockage and sealing


• Includes 4 reusable, water-activated flood bags for emergency preparedness and seasonal storms


• Resists tearing with reinforced edge stitching and durable non-woven fabric construction


• Protects efficiently without sand—clean setup, easy positioning, and compact storage before use

Keep these water-activated flood bags ready for sudden downpours, rising groundwater, or storm-season protection. Place them across doorways, along garage openings, or at basement entry points, then activate with fresh water and let them expand to form a barrier. They’re a practical alternative to messy sandbags when you need quick deployment and reliable coverage. Note: do not use with salt water, lime, or calcium as reactions may reduce performance. Grab yours today and prep your home before the next storm hits.

• Pack size: 4 pieces


• Dimensions (each): 1530 x 210 x 3 mm (5 x 0.7 x 0.01 ft)


• Max expanded height: 76.2–101.6 mm (3–4 in)


• Materials: high-density non-woven fabric; superabsorbent polymer gel sheet


• Water absorption capacity (each): 11.83 kg (26.07 lb)


• Weight before absorption (each): 0.33 kg (0.73 lb)


• Weight after absorption (each): 12.16 kg (26.81 lb)


• Net product weight: 1.32 kg (2.91 lb)


• Filling weight: 0.22 kg (0.49 lb)