Please note that FSC certification applies to new inventory only (FSC C156584) The Melissa & Doug Wooden Building Blocks Set offers endless opportunities for hands-on play and learning. Build, Stack & Imagine: Kids explore endless possibilities by stacking, balancing, and knocking down colorful wood blocks while constructing towers, bridges, and imaginative structures Colorful Wooden Blocks Set: Includes 100 lightweight, yet durable, solid wood blocks in 4 colors and 9 classic shapes; pieces store neatly in the included sturdy cardboard toy box with carrying handle Montessori Learning Toys: Strengthen fine motor skills, hand-eye coordination & shape recognition, with preschool learning activities to foster early math concepts like counting, sorting & comparing Educational Toys for Any Occasion: When buying a birthday gift & holiday gifts for kids, or rewarding little milestones, celebrate the moments that matter with Melissa and Doug toys for boys & girls Wholesome Play for 35+ Years: Melissa & Doug inspires kid-powered play with its learning toys for kids, baby & toddler toys, puzzles, games, building toys & stuffed animals, dolls, & even a doll house; This product is certified by the Forest Stewardship Council. With 100 solid wood blocks in four bright colors and nine classic shapes, toddlers and preschoolers can stack, balance, and build in countless combinations.