Nylon available in all sizes. 1000 micron size covers 100 square meters. 500 micron size covers 40 square meters. Moisture Insulation: Prevents moisture and salts from rising from the soil to the concrete pour. Iron Protection: Protects reinforcing iron from rust due to moisture. Concrete Quality: Prevents the soil from absorbing concrete water before it dries, ensuring the strength of the pour. Work Cleanliness: Provides a clean environment for pouring. ( Phone number appears when clicking the contact button )