Micro Pebbles with Glass are the new generation of pebbles that come with added glass beads to enhance the beauty of the product. This pebble product has some of the smallest pebbles which give the surface a smoother feel compared to older pebble products. It is also one of the strongest surfaces available, giving it an average life of 15 + years, provided the chemicals are balanced properly. Backed by 10 full years of warranty, which is transferable