SmartMax Build XXL STEM Building Magnetic Discovery Mega SetA container full of SmartMax fun!SmartMax Build XXL features 70 building pieces and a container that is a sturdy storage unit - and much more!Both the lid and the bottom of the container each offer unique building grids to help you on your way to building original and colourful structures. Colourful building guides are also included.STEM LEARNING FUN: SmartMax Build XXL features colorful oversoze bars and metal balls for a super fun introduction to STEM concepts for young kids. With 70 pieces and a sturdy storage case, Build XXL is perfect for the home…and the classroom!ENGINEERING AND CREATIVITY: Designed for ages 3+, kids will be enthralled by the tactile process of clicking the bars and balls together. SmartMax magnets can carry up to 60x their own weight…making extraordinary structures possible!SET INCLUDES: 70 colorful pieces with strong bars, metal balls and a sturdy case for storage.ENDLESS PLAY: All SmartMax sets are compatible with each other. Kids can start building…and keep building.QUALITY AND SAFETY: Award-winning SmartMax Magnetic Discovery sets are build with high quality materials, including sonically welded bars.Suggested age suitability 12 months and upwards.