Even our small blocks are big blocks! The StemFuel Deluxe Jumbo Building Blocks are designed for toddlers and older children to be able to handle, stack, and unstack with ease. These big building blocks are great for making forts, castles, trains and more! Everyone loves to build things and nothing lets your child's imagination flourish quite like building blocks. Now with the various colored blocks, your son or daughter can become the architect of their very own adventures! With this many stackable building blocks, your child will have countless options to explore their creativity! Our big blocks for toddlers and older kids provide a perfect chance for parents to bond with their children or for brothers and sisters to bond! Building blocks allow children to explore their creativity while developing their understanding of shapes and architecture. Plus, they're just plain fun! The StemFuel Deluxe Building Blocks are all proudly made right here in the USA in factory in Wisconsin. Each of our stackable giant blocks are manufactured from a polypropylene co-polymer plastic that is safe for use by children. ***Block colors may vary*** Small Builder Kit Small Train Kit Medium Builder Kit Medium Train Kit Large Builder Kit No. of Large Blocks 32 28 56 49 63 No. of Small Blocks 8 7 16 14 49 No. of Train Cars - 2 - 4 - Soft & Smoothe Plastic ✓ ✓ ✓ ✓ ✓ Safe & Friendly Materials ✓ ✓ ✓ ✓ ✓ For Ages 3+ ✓ ✓ ✓ ✓ ✓ Made in the USA ✓ ✓ ✓ ✓ ✓ 48 Piece Large & Small Block Set 64 Piece Large Block Set 72 Piece Small Block Set 88 Piece Large & Small Block Set 133 Piece Large & Small Block Set No. of Large Blocks 24 64 - 40 42 No. of Small Blocks 24 - 72 48 91 No. of Train Cars - - - - - Soft & Smoothe Plastic ✓ ✓ ✓ ✓ ✓ Safe & Friendly Materials ✓ ✓ ✓ ✓ ✓ For Ages 3+ ✓ ✓ ✓ ✓ ✓ Made in the USA ✓ ✓ ✓ ✓ ✓