Boys and girls aged 4 and up can learn to build and replay the action from season 4 of the NINJAGO® Dragons Rising TV show with this fun toy mech. The LEGO® NINJAGO Jay’s Dragon Mech Battle (71853) adventure toy features 2 mechs and 2 minifigures. Jay's dragon mech has an opening cockpit with space for his minifigure, and an adjustable tail, wings, arms, legs, torso, and fingers. The Mutation Monster's mech has a cockpit for its minifigure and adjustable tentacles, arms, legs, and upper body. The set also comes with 4 interchangeable weapons for extra playtime fun: 2 swords, a spear, and a pair of claws. This ninja toy is designed to let children aged 4 and up experience the joy of building with LEGO bricks. The adventure toy includes a Starter Brick: a partially built base that allows children to build quickly and confidently. The set contains 107 pieces.