These interlock in a row or around a corner and provide young children with their first building brick set. Made from a special see-through silicone in 4 colors which is soft and flexible to the touch and safe to handle by children of any age. They are ideal for use by toddlers on a light panel or even in sand and water. Clean using soapy water or in a dishwasher on a high temperature without harm. The set comprises of 24 pieces in 4 colors: 6 each of red, blue, green and yellow. Measures 3" x 1.50" x 1". Ages 12 months and up.