Stack "em up with the Discoveroo Wooden Sort n Stack Truck. Crafted of sustainable plantation wood, this set comes complete with a semi trailer and 14 colorful disks for sorting. Each color has a differently shaped center, so growing minds learn about shapes as well as counting and colors. Recommended for ages 18 months to three years. About Flat River Group Distributing to over 10,000 storefronts, Flat River Group is dedicated to building strong relationships with key retailers across the country. Their full-service wholesale distribution streamlines operations while decreasing costs. Their cutting-edge software, information systems, and unique shipping capabilities allow them to store, package, and ship products to their clients with ease. The result? The best in sales, inventory, and fulfillment. Sort n" Stack truck. Made of sustainable plantation wood. Semi truck and 14 colorful sorting disks. Helps develop manual dexterity. Recommended for 18 months to 3 years. Truck: 13.5L x 5.6W x 3.9H in..