Fun with Sounds Wooden Discovery Blocks by HABASqueaking, clacking, rattling, tinkering.. each cube awaits with a different acoustic effect. In this way, early perception and musicality are fostered. Little sound explorers will really enjoy themselves playing with the discovery blocks and revel in the thrill of creating their own sounds and acoustic experiments. Contents: 6 discovery blocks with different acoustic effects. Each cube measures 1. 75" x 1. 75" x 1. 75". Suitable for ages 12 months