Yellow Door Let's Investigate Nature are beautifully tactile stones to reflect the natural treasures children might discover in the natural world. Designed for outdoor learning investigative play and forest school the stones are robust for lots of outside adventures!They are durable enough to be used in water soil mud and play clay and are easily cleaned. Go on a nature hunt and compare with the real things make imprints in play dough and take rubbings using wax crayons. Set contains eight stones:AcornDandelion seed headFeatherPine coneSnail shellSpider’s webSycamore leafSycamore seedsStones measure approx. 85mm. Age Suitability: 2 Years +