24 lightweight yet durable blocks in three sizes are perfect for little builders with big plans. Build their sense of imagination with Melissa & Doug Jumbo Cardboard Blocks and watch them create some towering structures. Bright Primary Colors With Brickwork Patterning Premium Extra Thick Cardboard Is Easy To Assemble And Easy To Wipe Clean Super Strong The Red Blocks Hold Up To 150 Lbs Adult Assembly Required Extremely sturdy and durable, yet amazingly lightweight Premium extra-thick cardboard with wipe-clean surface 24-piece set includes three sizes of blocks; largest is 12x6x3" and holds up to 150 lbs 18¾x13x5½" For ages 2 and up Assembly required Measurements: 19 Length/Inches, 3.7 Width/Inches, 12.7 Height/Inches Country of Origin: Imported