This giant multi-coloured strong interlocking building blocks set comprises 20 pieces. With limitless play and construction possibilities to let your childs imagination run wild building larger structures than you can with smaller building block sets. Suitable for indoor and outdoor use, this set has two different sizes of blocks (this set comprises 10 large and 10 small), the large pieces measure 20 x 10 x 7.5 cm and the smaller pieces measure 10 x 10 x 7.5 cm. For ages 10 months and over. WARNING(S): Only for domestic use. To be used under the direct supervision of an adult.