There’s so much for your little Trolls fan to discover in the LEGO Trolls World Tour Poppy’s Hot Air Balloon Adventure 41252 building set. They can use the flapping hearts to change the balloon’s position, play with the minifigures (and the Trolls’ hair!), then find the collectible musical string hidden in the metronome. It’s a world of creative play for fans of the DreamWorks Trolls movie. Gender: unisex.