Make playtime more exciting with the LEGO® Friends Mermaid Rollercoaster (42703) for kids 8+. This fun gift for boys and girls lets little builders create a working rollercoaster around a rotating pool filled with beautiful mermaids. This exciting working set includes lots of accessories and 5 mini-dolls, including Autumn, whose face can be swapped to show relaxation or excitement, and 2 mermaids, Serina and Azuria, both with opalescent hair. Amusement park fans will find many ways to enjoy this rollercoaster set, with themed details around every corner, including a ticket booth at the entrance, a park map, photos and more. Kids enjoy intuitive building with the LEGO Builder app, zooming in and rotating models with 3D instructions while saving and tracking progress – all from the app. The set contains 864 pieces.