Dimension: 16cm x 16cm x 16cm each block. Classic Baby Development Toys: The Block Play set is a set of twelve soft blocks for toddlers and children (ages 9 months and up) to build and play with as they explore movement. A Must for Playroom: Our stacking blocks feature a captivating design that is a hit in commercial daycares, preschools, homeschools, playrooms and children's bedrooms. Quality Materials: These children's building blocks are designed with a dense foam core upholstered in non-toxic polyurethane soft leather that is easy to wipe clean with a soap and water solution. Cheerful assorted colours, cool contemporaries, or subtle earth tones to match any space or taste. Minimal chemical emissions into indoor air to ensure a safe play environment.