These giant LEGO like Soft building bricks were manufactuered from an unique soft and patented material. For this reason children could play safely with these large soft blocks and build the greatest constructions. LEGO Soft bricks can be used for both indoor and outdoor activities. Moreover, these large blocks do not contain phtalates or any other toxic materials so even the youngest children and toddlers can play 100% safely in your daycare center, waiting room or kids corner.