The SmartMax Build & Roll set encourages children to develop their visual-spatial skills by building their very own constructions and ball runs using the fun, semi-transparent tubes. The oversized pieces are specifically designed for handling by young children as they learn about the effects of magnetic attraction and repulsion. The colourful picture guide gives many suggestions for small and large constructions. The magnets are strong enough to carry up to 60 times their weight. This SmartMax set includes a total of 44 pieces and is suitable for children from 3 years. Older children can build towers, bridges and other super-sized constructions. This set comes with a sturdy storage box that helps keep things organised as well as a grid template on the top lid to build from. All SmartMax sets are compatible with each other. The information provided here is as complete and accurate as possible; however, product names, colours and/or materials are subject to change without notice.