Butterfly Puzzles are Consumer Product Safety Commission 2009 tested and approved. All Wee Organics products are hand rubbed with natural oil that is FDA approved. Designed for early learning, the 7" x 5" puzzles measure are 1" thick, and each of the four to five pieces is 2" to 3" high. Wee Organics recommends that parents help their child initially and then let them progress on their own. "Wee Organics hand rubs each wood piece for a smooth, tactile experience. Each puzzle can also stand up on its own," Ed Bogosian, president of Wee Organics, told TDmonthly. Launch date: 2004.