SKU: 7453832730

GraviTrax Extension Twirl

Sale price$39.60 Regular price$44.00
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Ships within 48 hours · Estimated delivery Jul 22 - Jul 27

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Description

GraviTrax Extension TwirlThe GraviTrax Extension Twirl is a pack that can be combined with the GraviTrax Starter and Pro Set. A fantastic set of Tunnels, Spirals, and Flextube tiles for GraviTrax! With GraviTrax, building fun has free rein. The GraviTrax ball track system can be expanded infinitely through extensions, which guarantees unlimited building and playing fun. By freely designing the ball tracks and exploring the rolling and flight behavior of the balls, the

The GraviTrax Extension Twirl is a pack that can be combined with the GraviTrax Starter and Pro Set. 

A fantastic set of Tunnels, Spirals, and Flextube tiles for GraviTrax! 

With GraviTrax, building fun has free rein. The GraviTrax ball track system can be expanded infinitely through extensions, which guarantees unlimited building and playing fun. By freely designing the ball tracks and exploring the rolling and flight behavior of the balls, the understanding of science is sharpened and gravity can be experienced up close. 

The STEM mark on our products signals a game category where science is experienced through play. STEM (Science, Technology, Engineering, Mathematics) corresponds to the German MINT (mathematics, computer science, natural sciences, technology). 

Use the free app on Android and IOS for the GraviTrax ball track system with its free editor to build your very own fantastic tracks, and then roll the balls as you watch from different angles. Try endless new combinations and come up with new ideas to build your tracks. Experience the tracks interactively and follow the balls from a variety of camera angles – including in Virtual Reality if you have the right glasses and a compatible phone. 

Warning: Not suitable for children under 3 years. 
Small components. Choking hazard 
Ages: 8+ years 
Model Number: 27200-6 
Box Size: 33.5 x 33.5 x 5cm (apx)  

Shipping Notes
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Exchange/Return Notes
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SKU: 7453832730

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4.7 ★★★★★
Based on 12 reviews
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Verified Purchase
SeanCeltiad
Omaha, US
★★★★★ 4
A true turtleneck that retains a snug high neck.
Color: White, Size: X-Large
I've found this brand to have gotten better over the years as far as offering the American market what it needs in terms of realistic sizing. I only wish they'd realize that there are a lot of us who are long in the back and arms where my only choice is to go a size up and sacrifice a slim fit for sleeves that are long enough plus a back that doesn't go up past my waist just because I reach up for something, that and I like to be warm. So these are such nice quality turtlenecks that it's hard to complain about but maybe the company will read this. The snug neck stays up is plus number one since that's why I'm buying a full neck. They come with very nice weaves in the fabric, good enough for casual or formal wear. Finally the warmth you seek is there but I've worn them in what most would think isn't the right temp for a turtleneck. Also they have them in white! Yes, a lot of others just don't for reasons I can't fathom, and the pic you're seeing is accurate, these will form to your shape without being ridiculously thin material. Several washes later and they are as fine a garment as when I first wore them. I've only found one other brand that compares to these but it's much more expensive, COOFANDY is affordable in these times of expensive everything. Warm but also a lightweight shirt, I've gotten them really dirty with actual dirt and it washes out so well you'd never know it. Don't let my taking off one star stop you, try one yourself and you'll be coming back for more.
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Reviewed in the United States on July 30, 2025
L
Verified Purchase
Larry
Pawtucket, US
★★★★★ 5
Quality,warmth and fit
Color: Royal Blue, Size: Small
Really top quality. This is my 4th purchase of these Really great sweaters.
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Reviewed in the United States on February 12, 2026
R
Verified Purchase
Robert III
New York, US
★★★★★ 5
Nice Sweater
Color: 01-black, Size: Large
This is a very nice sweater. It’s reasonably thick and warm. Looks nice. I like it.
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Reviewed in the United States on January 18, 2026
T
Verified Purchase
Tajuana Perkins
Lowell, US
★★★★★ 5
Nice turtle neck sweater
Color: Royal Blue, Size: Small
It was true to size a perfect fit and the color is beautiful. Nice sweater for the amount paid.
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Reviewed in the United States on January 11, 2026
N
Verified Purchase
Nathalie M. Rosario Escobar
San Leandro, US
★★★★★ 5
Very good
Color: 01-black, Size: Small
It looks so good on my bf, he really like it. The quality is so perfect.
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Reviewed in the United States on January 15, 2026

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