GraviTrax Expansion Tunnels
SKU: 91847740935

GraviTrax Expansion Tunnels

Sale price$35.99 Regular price$39.99
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Ships within 48 hours · Estimated delivery Jul 4 - Jul 9

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Description

GraviTrax Expansion TunnelsSend your marbles through the GraviTrax Tunnels for surprising race results! Only playable with the GraviTrax Starter sets (sold separately). Add some stealth and an element of surprise with the GraviTrax Tunnels Expansion set! Packed with 18 components, use straight, curved and vertical tunnels to hide your marbles as they fly through your tracks, or help fast moving marbles navigate sharp turns. Test the Bernoulli track to see how much speed you can

Send your marbles through the “GraviTrax Tunnels” for surprising race results!

Only playable with the GraviTrax Starter sets (sold separately).
Add some stealth and an element of surprise with the “GraviTrax Tunnels Expansion” set! Packed with 18 components, use straight, curved and vertical tunnels to hide your marbles as they fly through your tracks, or help fast-moving marbles navigate sharp turns. Test the Bernoulli track to see how much speed you can generate, or drop the marble to a level below with the cool o-tracks. Combine with any “GraviTrax Starter-Set” to experience the power of gravity and educational fun today!

What makes a great toy? GraviTrax checks all the boxes! It’s a creative, modular, expandable track system that challenges children to use their imagination to build their own marble runs! Electronic-free, GraviTrax construction sets use STEM-friendly concepts while building critical thinking and problem-solving skills. Completely open-ended, every GraviTrax set has a boredom-busting variety of play options for hours of fascinating fun. Once the basics are mastered, simply add expansion sets and accessories to propel those metal marbles around the tricked-out track of your dreams!

Comes complete with 4 curved Tunnels, 2 straight Tunnels, 2 Y-junction Tunnels, 2 card bases, 1 vertical U-turn, 2 drop o-tracks, 2 bowed Bernoulli tracks and instructions.

Lasting durability for girls and boys ages 8 and up, it’s the learning toy children (and savvy adults) return to over and over again!

Contents: 4x Curved Tunnels, 2x Straight Tunnels, 2x 'Y' Junction Tunnels, 2x Card Bases, 1x Vertical U-Turn, 2x Drop Rails, 2x Bent Rails

 

Recommended Age: 8 years +

Shipping Notes
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Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
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SKU: 91847740935

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Kat
Lowell, US
★★★★★ 5
Already got complements!
Size: 2T, Color: Dark Indigo Wash, Size: 2T, Color: Dark Indigo Wash
Great fit, it’s a little stretchy so perfect for my toddler!
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Reviewed in the United States on April 6, 2026
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Deise Mendonca
New York, US
★★★★★ 5
Soft material
Size: X-Small, Color: Dark Indigo Wash
Looks beautiful and is very soft
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Jazz
Birmingham, US
★★★★★ 5
Soft and lightweight
Size: XX-Large, Color: Light Denim Blue, Size: XX-Large, Color: Light Denim Blue
Great lightweight jacket more like a shacket really. Fits my son nice as well. So soft.
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Reviewed in the United States on March 21, 2026
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Jia
Phoenix, US
★★★★★ 4
Thin
Size: XX-Large, Color: Medium Indigo Wash
it's good but very thin.
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Reviewed in the United States on December 26, 2025
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kmac
Carnegie, US
★★★★★ 5
Nice jacket!
Size: Large, Color: Dark Indigo Wash
I got this coat for my nephew because he has been begging for a similar one and he loves it! The sizing is dead on and the fabric is a little stuff so size up if you think you'll need to. Great quality, well made!
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Reviewed in the United States on May 11, 2026

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