If your children are into Lego® Duplo then they're going to LOVE these awesome Crazy Marble Run building block sets! Great for Christmas or Birthday Gifts

Perfect for Christmas or Birthday Gift! Let your kids build their very marble run track with a choice of 74, 148, 222 or 296 piece bundles.

Helping to develop hand-eye coordination, logical thinking, creativity, color and shape recognition, spatial imagination ability, patience and problem-solving skills.

The set will attach to any existing Lego® Duplo blocks and is guaranteed to keep your little ones happy for hours on end!

Crazy Marble Run Blocks Features:

• Marble run building block sets
• Compatible with all Lego® Duplo sets
• Does not contain fluorescent ABS
• Promotes creativity and imaginative thinking
• Safe and eco-friendly
• Suitable For Children Over 2 Years of Age
• Colors: VariousLEGO^®is a trademark of the LEGO Group of companies which does not sponsor, authorize or endorse this site

Crazy Marble Run Blocks Specs:

• Material: Eco-friendly ABS plastic (non-toxic and odorless) 
• Size: 74, 148, 222 and 296 piece bundles