What is the diameter?

This is smaller than the original WhamO Superball. The original one was at least 2in and made of the patented and very expensive, hard man-made rubber called Zectron invented in 1964 by the Bettis Rubber Company. It is still the bounciest ball ever made with being the only ball having the ability to be tossed at a 20 degree angle and bounce out at the same 20 degree angle. In the 70's the market got flooded with cheap obviously less-bouncy copies, so WhamO ceased all production in 1976. Early ones were black, later the real WhamO ones that I saw and bought back in the early 70's were a dull/flat Grayish-Blue in color. They were kinda dangerous. Once, I hit myself in the eye and saw LIGHTNING!! and got a nice "shiner". This one and all others are obviously a cheap copies. Look up the YT vid "Wham-O Super Ball Commercial (1960s)". If your ball doesn't bounce like this, it's not a real Superball made of Zectron.

What is the diameter of this ball? It’s listed as “Item dimensions: 7.25 x 2.75 x 2 inches, which is patently ridiculous for a spherical object.

the dimensions are for the blister pack the ball comes on. The 2-inch dimension is the blister size, so the ball is about 2 inches in diameter.

Are they good for playing with dogs?

No. The product is 50,000 pounds of compressed Zectron, which is what makes it bounce so high. The compression, however, makes the substance come apart with wear and a dog's teeth would cause it to come apart in the dog's mouth. And though it may or may not be toxic (I don't think it would), you still don't want it coming apart in the dog's mouth.

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Wham-O The Original Superball with Zectron

Product ID: 270638171

Details

Age range (description)
5+ Years
Brand
Wham-O
Colour
Black
Item weight
9 g
Material
Synthetic

⚫Authentic Zectron material

💥50,000 lbs compressed energy

⬆️Bounces higher than any ball

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€ 23.95

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In stock

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Description

⚡ Bounce Beyond Limits with the Original Superball!

ICONIC ORIGINALITY - The only 'Real' Superball—own a piece of classic toy history.
SKY HIGH PERFORMANCE - Outbounce every competitor with the highest jump in the game.
UNMATCHED BOUNCE POWER - Harness 50,000 pounds of compressed energy for explosive rebounds.
AUTHENTIC ZECTRON BUILD - Crafted from the exclusive Zectron synthetic rubber for durability and peak elasticity.
VERSATILE FUN FITNESS - Perfect for outdoor games and exercise, blending play with active lifestyle.

The Wham-O Original Superball, made from exclusive Zectron synthetic rubber, delivers an explosive bounce powered by 50,000 pounds of compressed energy. Measuring 2.5 inches in diameter and weighing just 9 grams, it outperforms all other bouncy balls, making it the definitive choice for outdoor fun and fitness enthusiasts aged 5 and up.

Specifications

ASIN	B0001ZN49I
Age Range Description	5+ Years
Best Sellers Rank	#288,196 in Toys ( See Top 100 in Toys ) #21,089 in Sport & Outdoor Toys
Brand Name	Wham-O
Color	Black
Construction Type	Zectron spherical shape
Customer Reviews	4.2 4.2 out of 5 stars (1,079)
Global Trade Identification Number	00032187720365
Item Diameter	2.5 Inches
Item Weight	9 g
League Name	FINA
Manufacturer	Wham-o
Manufacturer Part Number	FBA_72036
Material Type	Synthetic Rubber
Model Number	72036
Number of Items	1
Recommended Uses For Product	Outdoor games, Exercise
Sport Type	Exercise & Fitness
UPC	787793294426 696748829371 032187710120 032187720365 789610352692
Unit Count	1 Count

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