Green Toys Blocks are the world’s most environmentally friendly basic building set. All 18 boldly colored blocks are oversized and lightweight, making it super easy for tiny hands to stack and unstack. This unique block set includes a variety of shapes for building castles, towers, or any imaginative structure budding architects can dream up. Here’s an even greater incentive to make your kids drink their milk. Green Toys uses recycled milk containers as the main ingredient to create their toys. The milk containers are re-processed into high-density polyethylene (HDPE). It’s one of the safest, cleanest plastics around. Everything from the collection of materials to the production of Green Toys occurs in Los Angeles, CA. Local production of toys means that far fewer miles are used for transportation. On average, every pound of recycled milk jugs used in the making of Green Toys saves energy equal to 3,000 AAA batteries. Green Toys products are tested by nationally recognized, independent, third-party labs (located in the USA.) They contain no traceable amounts of Phthalates or BPA. They are also designed without any external coatings, eliminating the fear of lead paint. Although Green Toys may not be as nutritious as a glass of milk, you no longer need to worry about what odd chemicals your kids are ingesting every time they launch a playful bite into one of their toys. Most importantly, Green Toys Blocks are safe. No BPA, PVC, phthalates or external coatings, but plenty of Good Green Fun. These blocks are made in the USA from 100% recycled plastic milk containers that save energy and reduce greenhouse gas emissions. Dimensions: Single block: 3”D x 3”W x 2-1/2” H. Includes 18 oversized, mulitcolored blocks, 8 single blocks, 4 half blocks, 2 double blocks, 2 double bridges, and 2 triangle blocks, color combination may vary.