Each of our products are handmade in small batches. Color and texture variations are to be expected as no two pieces are ever the same. Air bubbles can occur in the finished product, but this is not considered a flaw. Each piece is unique and one of a kind. Every item is fully sealed with an environmentally safe concrete sealer and suitable for indoor and outdoor use. To clean, wipe with a damp cloth. Due to the temperamental nature of concrete and cure time, hairline cracking may sometimes occur, but will not damage the overall piece.