MONSTER JAM™ BUILDING TOY – The LEGO® Technic™ Monster Jam Sparkle Smash™ Pull-Back truck (42220) offers hours of play for boys, girls and kids ages 7+ who enjoy monster trucks and unicorn toys MONSTER TRUCK TOY WITH PULL-BACK ACTION – Pull thetruck toy back, then release it to recreate the thrills of the Monster Jam™ arena with exciting tricks and stunts UNICORN DETAILS – This Monster Jam™ model building kit features authentic design details like the sparkling stars and iconic unicorn horn inspired by the real Monster Jam Sparkle Smash™ truck ENCOURAGES CREATIVE PLAY – Kids can create their own epic Monster Jam™ events and adventures as they play with their truck toy GIFT IDEA FOR KIDS – This LEGO® Technic™ vehicle toy building set makes a fun gift for boys and girls ages 7 years old and up who love monster truck toys and pull-back cars DISCOVER MORE SETS – Explore more action-packed play with the range of LEGO® Technic™ sets (sold separately), which feature realistic movement and mechanisms to inspire young builders A FUN WAY TO BUILD – The LEGO® Builder app guides kids on an intuitive building adventure where they can save sets, track progress and zoom in and rotate models using 3D instructions as they build DIMENSIONS – A 243-piece set with a truck toy model measuring over 5 in. (12 cm) high, 7.5 in. (19 cm) long and 4 in. (11 cm) wide