Proudly with durable Jumbo Blocks interlocking design allows you to create unlimited designs and possibilities. Parents can join in on their child creativity development and social play with others. Soft rounded edges ideal for safe indoor/outdoor play environment children can build stack and tear down for hours to come. Jumbo Blocks comes in 4 bright primary colors (Red Green Yellow and Blue) and 2 sizes (8 in. x 4 in. and 4 in. x 4 in.) Ages 24 months +.