The wooden structure of the train is a bit complicated because it simulates a real train. The puzzle kit is a bit challenging for beginners, but also a very enjoyable experience when you assemble the train.Specifications and Features:Locomotive dimensions: 7 x 1 ¾ x 2 ¾ inchesPackage dimensions: 16 x 12 x 3.5 inchesFinely detailed steam locomotive and three wagons40.5" x 30.7" oval of snap-fit tracks. That makes up to 10 feet of modular tracks!Function: Lights, steam, and train sound. Locomotive smokestack moves up and downInterchangeable tracks snaps together easilyHelps younger children develop hand-eye coordination and helps them develop cognitive skills and create imaginary scenarios for play. Visual perception exercises to help color recognitionMaterials made in line with international health &safetystandards Environmentally-friendly, safe &nontoxic17 pieces in totalPackage Contents1 x Locomotive3 x Wagon10 x Track (8 curved, 2 straight)1 x Tree decor1 x Rail StationRequired: 4 x 1.5V ‘AA’ size batteries (NOT Included)More choices click hereIf you have any questions about this product, please contact us and we will try our best to solve the problem until you are satisfied.