Yellow Door Alphabet Pebbles - Word Building SetThese tactile Word building Alphabet Pebbles from Yellow Door are a great way to introduce letters and word making to your little one. Made from a durable stone and resin mix these stones will engage your little one in play while exploring, sorting, collecting and word making. Appealing to a childs natural instinct to collect and sort, these durable and weatherproof pebbles can be used in sand, water and soil. Includes 50 Pebbles measuring between 30