Real wood, durable, interlocking building blocks. Rectangular building blocks using "log-style" construction. Brightly colored, all wooden pieces are used to build new and exciting designs. Suited for both boys and girls alike, Wood-Links help bridge the gap between beginning construction toys such as mega blocks to more advanced Lego designs. All products are manufactured and packaged in the USA. Pieces are constructed of wood and colored with a non-toxic food-based dye with a waxed seal. Colorful, food-grade dyes bring this natural fort play set to life. Building directions included in package. Packed in a plastic tub.