Start learning about size and order with this stacking ring. For safety precaution, the center rod is foldable. Includes 1 base, 3 wooden rings and 1 ball. Develop early fine motor skills and start learning how to differentiate between various sizes and colors. This set of 5 sensory blocks consists of 1 visual, 2 auditory and 2 tactile blocks. This toy stimulates touch, sight and sound while encouraging kinesthetic learning. Engages and captures a child's attention by stimulating their senses. Match the basic shapes to their holes. Grip handle design for easy use. Block shapes are strung together to make sure they don't get lost. Easy hold grip on the sorting palette for play anywhere you go. Sustainably made in Thailand using chemical-free rubberwood, formaldehyde-free glue, organic pigments and water-based dyes. I have other Plantoys listed if interested in bundling.