The Giant Cube Block Set is a great versatile product that children can use to design their own obstacle courses or create their own super scale constructions. This open-ended Giant Cube Block Set offers endless possibilities for play in addition to developing children's core strength by crawling. Largest H1m x W1m x D1m, Smallest H60cm x W60cm x D60cm. Pack of 4. Steps included. We advise this product is sited on a level surface which provides some form of protection. Grass is usually okay, gym mats and play bark chips. To meet safety standards, we advise you have 150cm falling space on all sides.