Protects the planter: This liner stops soil from coming into direct contact with the wood of the planter, so protecting the wood and increasing its life span Stops soil from leaching out: The liner also stops soil from leaching out of the planter through any gaps in the wood, helping to retain nutrients Improves water management: The liner will help retain moisture in the planter so you will not have to irrigate as often Reduces staining: Stopping the water from leaching out of the planter will reduce the amount of staining on a patio, decking or other material the planter is placed on Dimensions: The liner measures 115cm x 160cm