Young construction workers and architects will spend hours with these lightweight yet durable cardboard building blocks. This 40-piece set features three sizes of "bricks" for constructive imaginative play. Made of premium, extra-thick cardboard for strength, they are easy to assemble and feature a wipe-clean surface. The red blocks hold up to 150 lbs!

• Includes 40 blocks in 3 different sizes (12" x 6" x 3"; 6" x 6" x 3"; 6" x 3" x3") to inspire creative building and play
• Made of premium, extra-thick cardboard - red blocks hold up to 150 pounds
• Bright, colorful graphics on every block; lightweight and easy for children to lift
• Includes step-by-step instructions for easy fold-together assembly (adult assembly required)
• Makes a great gift for toddlers and preschoolers, ages 2 to 5, for hands-on, screen-free play