Bio-Save Lawn And Leaf Bags Feature A Two-Ply, Heavy-Duty Construction For Reliable, Refuse Disposal - Moist Or Dry. Durable Kraft Material Offers Excellent Wet Strength To Prevent Premature Deterioration. Its Unique Design Is Self-Standing And Self-Opening To Easily Dispose Waste. 30-Gallon Bags Are Perfect For Leaves, Grass Clippings, Yard Waste And More.