Smooth over-sized beech wood Jumbo Sensory River Stones feature a nature inspired textured inset. Children age 2 and up can engage in sensory play while practicing stacking balancing and strengthening their tactile differentiation. A beautiful subdued colour palette furthers the possibilities for organic connections during natural play. Smallest stone measures 13cm W x 6.5cm D x 3cm H largest stone measures 19.5cm W x 9.75cm D x 4.5cm H.Over-sized stone-shaped blocks made from beech wood feature plastic inset texturesSubdued colors provide a beautiful natural palette Encourage patterning and stacking and strengthen fine motor skills using this unique building toyStore indoors in a cool dry place or out of direct sunlightAges 2+