2 years & up. Enhance building possibilities with a lightweight set of oversized blocks. Made from durable, heavy-duty cardboard, the Jumbo Brick Blocks are strong enough for continued use indoors. An authentic gradient of brick red colors, as well as illustrated textures introduce dramatic play possibilities into constructive activities. Simply fold each Jumbo Brick Block to create a variety of different shapes. Rectangle units measure 11"L x 5.5"W x 2.76"H, square half units measure 5.5"L x 5.5"W x 2.76"H, arches measure 11"L x 5.5"W x 2.76"H, triangles measure 10.7"L x 5.5"W x 2.76"H.