Polar White gravel poly bags are made up of 20mm white dolomite gravel pieces with angular edges. Ideal for driveways, rockeries and boarders. Features: Size: 14mm -20mm Colour: White & Grey Shape: Angular Rock Type: Dolomite Fish Friendly: No Supplied Washed: Yes Lime Free: Yes Recycled: No Available in 20kg Poly bags or 850kg Bulk bag.