• A monster truck model build – Kids can build and race this LEGO Technic Monster Jam Monster Mutt Dalmatian (42150) toy truck. With pull-back action, this 2-in-1 toy offers hours of play• Inspire arena adventures – Kids use the pull-back feature to send the model truck racing along before recreating cool monster truck tricks as seen in the Monster Jam arena• Twice the fun – Kids can enjoy a new challenge by rebuilding the Monster Mutt Dalmatian into a Race Truck• Monster Jam graphics – Comes with sticker details designed to delight Monster Jam fans• For kids aged 7+ – This monster truck makes a fun birthday, holiday or anytime gift for Monster Jam fans and offers an introduction to engineering for kids who love building toys• Sized for play – This Monster Jam truck model measures over 4.5 in. (11 cm) high, 7 in. (19 cm) long and 4 in. (11 cm) wide• Intuitive instructions – The LEGO Builder app guides you and your child on an intuitive building adventure with tools that let you zoom in and rotate models in 3D, save sets and track progress• An introduction to engineering – LEGO Technic buildable model sets feature realistic movement and mechanisms that introduce young LEGO builders to the universe of engineering