Canvas Long-Sandbag is an effective barrier for heavy rain, water, flood and hurricane placing at doors and windows of house, garden gate, garage entrance, basement skylight. Use to control, contain and divert flood water, ready to use, no sand or labor needed，Compact & Lightweight, stores away until needed.Features：1. Self-Inflating, water-activated, fast absoption, high capacity sandless flood barriers.2. The are made of thick canvas material, firm and durable, super absorbent material.3. Ready to use, no assembly required. Ongoing protection can last for months.Specification:Product Name: water swelling bagMaterial: thickened non-woven fabric (non-fading)Expansion Time: 3-5 minutes.Pressure Strength: 150 kgProduct Style: fully sealedProduct Use: flood prevention, flood resistanceMaintenance:Air dry and store in a dry place after use.Packing Included:10*Sandbags