The 4.88x4.88 meter square polyethylene pool liner is an excellent solution for protecting and preserving your pool. With a durable material and a convenient size, it helps keep the pool safe from potential pests and the elements. Due to the great weight of pools filled with water, their substrate can easily be punctured by dirt such as stones, pebbles and others. Therefore, before filling your pool with water, make sure that you have installed the substrate, to be safe from damages that lead to cracks and water leaks.