Gemo are stylised climbing boulders made of fiberglass with surface imitating sandstone. On the surface these are equipped with climbing holds. Sets of stones make variable in height and special system with variable difficulty of routes.
Construction is made of steel hot-dip galvanized profiles, shell from a mixture of resin and mineral fibres. Stainless steel fasteners. Anchoring is made through hot-dip galvanized steel anchors.