Very young builders will love these sturdy cardboard building blocks because they are lightweight yet durable! This 24-piece set features 3 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. The Melissa and Doug Deluxe Jumbo Cardboard Blocks are designed with bright and colorful graphics that are visually stunning and spark creativity. This Melissa and Doug giant blocks set includes step-by-step instructions for easy fold-together adult assembly. The blocks have a wipe-clean surface for simple cleanup. The Melissa and Doug Jumbo Cardboard Blocks set makes an exceptional gift for kids from 2 to 4 years. Add the Melissa and Doug See and Spell Learning Toy to round out the pretend play experience and give kids another engaging option for screen-free fun. For more than 30 years, Melissa and Doug has created beautifully designed imagination- and creativity-sparking products that NBC News calls “the gold standard in early childhood play.” We design every toy to the highest quality standards, and to nurture minds and hearts. If your child is not inspired, give us a call and we’ll make it right. Our phone number is on every product! Gender: unisex.