Carol Geocell are honeycomb shaped structures with a cell depth ranging from 75 to 200 mm, made by the continuous extrusion of high density polyethylene (HDPE) with Ultrasonic soldering. The structure opens like an accordion and therefore can be transported and stored with minimal space and successively opened during installation, thus creating a series of completely interconnected, regular ovoid cells. Carol Geocells provide high tensile properties to assure its confinement and reinforcement function.(up to 0.57kN/5cm of the tensile strength of sheet material) (up to 1kn/20cm of the tensile strength of welded seams) Therefore, it is particularly useful in the foundation reinforcement of high ways, railways, protection of steep slopes, dykes, dams, and earth walls.