Leakproof, tough Durable EnGuard™I, PVC coated fabric provides broad UV and chemical resistance that withstands repeated usage. Reinforced inside supports reduce sagging and prevent tripping hazards that can be caused by outside supports.Lightweight berm folds down easily to a small size for storage in trucks, emergency vehicles, and spill kits. Add optional grates to help reduce contact with contaminated liquids by personnel or equipment.Helps comply with EPA for containment and spill preventio