Soft rounded edges for safe play. Colorful interlocking blocks. Helps children to develop eye to hand co-ordination and enhance motor skills. Made from durable polypropylene. Multicolor. Made in USA. 8 in. L x 4 in. W x 4 in. H (80 lbs.) Jumbo set makes tons of shapes like huge life size vehicles, buildings, robots, animals, air planes, forts, walls, lemonade stands and more. It is great for little hands to hold.