This is amazingly small micro sized block make it possible to create more detailed and even smaller projects than what can be made with a standard sized blocks. Nanoblock is a stimulating and entertaining hobby material for everyone, especially for grown-ups. Great for children who like to build structures. Helps to develop planning skills. Part of nanoblocks advanced hobby series. Helps to develop organisational skills. Size H7.3, W24, D19.2cm. For ages 12 years and over. WARNING(S): Not suitable for children under 3 years old. Only for domestic use. To be used under the direct supervision of an adult.