My Hoberman sphere got locked in the open position. Is it broken or is there a way to close it? I can't find the instructions - hardcopy or online!

Had the same problem; went through and checked that all the pieces were fully clipped and noticed some yellow ‘tabs’ that don’t clip-they sort of act as stops to keep it from opening too far. Some of the tabs were stuck when the sphere had been forced open too far. Fixed the tabs and it closed right down!

How do you contract it once it's locked open? Lost directions.

Hold the sphere at top and bottom and let it collapse. IF hanging it will stay open only. This thing does not lock to the best of my knowledge

Is there a Hoberman sphere that expands larger than 3 feet?

The Mega Sphere expands to 4.5 feet. https://www.amazon.com/dp/B00005N5FV?ref=myi_title_dp

Hobeman Sphere The Original Expandable Ball Science And Fun Rainbow

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Fully operational. Shipping worldwide, on schedule.Customs & duties included in the price

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₱9834

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Sold byAmazon PhilippinesDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

🌟 Expand your world, one colorful click at a time!

STEM MEETS FUN - Hands-on exploration of engineering, motion, and spatial relationships—perfect for curious minds 4 to 104.
DURABLE PORTABLE - Lightweight yet tough for endless expanding, collapsing, tossing, and displaying—play anywhere, anytime.
AWARD WINNING DESIGN - Created by Chuck Hoberman, this iconic toy blends art, science, and play in one kinetic masterpiece.
VIBRANT RAINBOW APPEAL - Bright multicolor construction doubles as a sensory delight and eye-catching decor for any space.
EXPAND YOUR IMAGINATION - Transforms from compact 9.5" to a mesmerizing 30" sphere—watch geometry come alive!

The Hoberman Original Sphere Rainbow is a patented, award-winning expanding and contracting geometric ball that grows from 9.5 inches to 30 inches in diameter. Designed by Chuck Hoberman, it combines vibrant rainbow colors with innovative mechanical engineering to deliver an engaging STEM toy that fosters creativity, motor skills, and spatial reasoning for ages 4 and up. Lightweight and durable, it’s perfect for play, education, sensory therapy, or as a kinetic art display.

Specifications

Age Range Description	Kid
Asin	B00000JN49
Best Sellers Rank	#26,427 in Toys & Games (See Top 100 in Toys & Games) #202 in Educational Science Kits
Brand Name	John N. Hansen
Color	Multicolor
Customer Reviews	4.7 4.7 out of 5 stars (1,554) 4.7 out of 5 stars
Educational Objective	stem
Global Trade Identification Number	00021105131147, 00780358101047
Included Components	mobile
Indoor Outdoor Usage	Indoor
Item Dimensions	9.5 x 9.5 x 9.5 inches
Item Type Name	Hoberman Original Sphere--Rainbow (Discontinued by manufacturer)
Item Weight	16 ounces
Manufacturer	John N. Hansen Co. Inc.
Manufacturer Part Number	TED-HS104
Manufacturer Recommended Age	4 years and up
Material Type	Plastic
Model Number	HS104
Number Of Packs	1
Number Of Players	1
Operation Mode	Manual
Power Source	manual
Set Name	Single Hoberman Sphere Toy
Size	Small
Sub Brand	(-)
Subject Character	Rainbow
Supported Battery Types	No batteries required
Theme	Geometric
Unit Count	1 Count
Upc	885788960513 885863156466 890418009890 885220147328 692000177990 885226967777 021105131147 885143493595 885863118983 025766201041 780358101047 765635859804 885153049195 885183659128

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TrustScore 4.5 | 7,300+ reviews

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