• Train track toy set – Toddlers aged 2+ extend their LEGO DUPLO railway adventures and learn development skills with the Train Tunnel and Tracks Expansion Set • Comes with lots of extra pieces to grow the fun – This creative building toy includes 10 track pieces, 1 action brick, a 2-way points piece and tunnel and funnel elements • Anytime gift idea – This extension set makes a fun treat for any toddler who loves to play with their LEGO DUPLO interactive toy train sets, sold separately • Quality toddler toys – All elements of this LEGO DUPLO toy have been tested to the max to ensure they fulfill demanding child safety standards • Track building that connects to toy train sets – Add this set to LEGO DUPLO Town interactive train sets (10427 and 10428) to create an even bigger learning journey for preschool kids • Skill-building playsets – LEGO DUPLO build-and-rebuild interactive train toys are designed to develop toddlers’ creative problem-solving, patience, focus and perseverance skills • Dimensions – This 20-piece set includes a tunnel measuring over 7.5 in. (20 cm) high, 6.5 in. (16 cm) wide and 6 in. (15 cm) deep