Weichelt Foam Building Blocks Set Mice: Giant blocks for young and old. The Foam Building Blocks Set Mice from Weichelt combines creativity with movement. Therefore, the large building blocks are an excellent choice for childcare institutions. The play elements are very durable and easy to maintain. The mouse blocks are made of foam and covered with a soft, skin-friendly artificial leather. Set components: 10 colorful cubes measuring 15 x 15 x 15 cm, 5 rectangular blocks measuring 30 x 15 x 15 cm, covering: soft artificial leather (top material: 100% polyvinyl chloride).