Bring your child's imagination to life when you use the Lego Boost Creative Toolbox 17101. Create unique electronic displays or stick to the basics when you build with the included 847 pieces. When you're ready, go ahead and sync the creation with a mobile device for full, on-the-go control over every movement. Thanks to Bluetooth connectivity, you can access these interactive Lego building sets wirelessly. A Lego poster is included to encourage your kid's love for building and construction. Size: One size. Color: Multi-colored. Gender: unisex. Age Group: kids.