Rank #1 in Best Slam Ball 2026: 9 Ranked, and the Labels That Don't Add Up
66fit No-Bounce Slam Ball (5kg, 10kg, 15kg)
Price and rating as shown on Amazon when we collected them. Both change.
The 66fit Slam Ball is the number one pick in this guide to the best slam balls. It is a PVC-shelled ball with a sand and iron mix core, sold as a no-bounce weight for slamming into a wall or the floor. At £20.50 it carries a 4.7 average from 1,008 ratings, and it sits at number 15 in Amazon's Medicine Balls category.
Where this listing gets interesting is the weight. The title stretches across three sizes — "5, 10, 15kg" — and the final bullet repeats that range. The specification fields do not. Size reads 10 kg, Item Weight reads 10 kg, and the item type name spells it out as "66 Fit Slam Ball - Black, 10 kg". Number of Items is 1 and Unit Count is 1.0 count, so this is one ball rather than a set of three. One more field is worth knowing about before you buy: Sport Type is listed as Tennis, while the brand's own bullets describe a ball for explosive strength, speed, stamina and boxing workouts. Everything on this page comes from the Amazon listing, not from any testing we carried out.
How those 1,008 ratings break down
An average hides its own shape. This is the spread behind the 4.7 stars.
Specification
Exactly as published on the Amazon listing, field for field.
| Price | £20.50 |
|---|---|
| Rating | 4.7 out of 5 from 1,008 ratings |
| Best Sellers Rank | 15 in Medicine Balls |
| Size (as listed) | 10 kg |
| Item Weight | 10 kg |
| Weights named in title | 5kg, 10kg or 15kg |
| Number of Items | 1 (Unit Count 1.0 count) |
| Sport Type (as listed) | Tennis |
What buyers actually say
Quoted from customer reviews on Amazon
Verified purchase“The slam-ball arrived on time but unfortunately at the wrong address, taking several days for me to locate it!Upon opening the package to find the Slam-ball was bagged & double boxed for protection.It felt good to hold with a slightly textured surface and comparable with to more expensive balls seen in retail stores.Out of interest it I weighed in on my bathroom scales which read 10.1 kg.”
Verified purchase“Got it yesterday and tried it today and proven I'm weak and need to work on it. Really happy and hopefully I'll be getting a heavier one soon”
What it is up against
The rivals it was ranked against in Best Slam Ball 2026: 9 Ranked, and the Labels That Don't Add Up.
Questions people ask
Which weight does this listing send?
The title says "5, 10, 15kg", but the Size field and the Item Weight field both read 10 kg, and the item type name is "66 Fit Slam Ball - Black, 10 kg". On the listing's own numbers, this is the 10kg ball.
Do 66fit slam balls bounce?
No. The 66fit bullets describe a no-bounce design, built to be slammed into a wall or the floor.
What is the 66fit slam ball made of?
Inner material is a sand/iron mix and the outer material is PVC, listed as a multi-layer PVC construction.
How many balls arrive with an order?
Number of Items is 1 and Unit Count is 1.0 count, so a single ball.
What is the model number of this ball?
ZHK-SB2022-X, which the listing also gives as the manufacturer part number.
What sport does the listing file it under?
Sport Type reads Tennis, even though the same listing describes a slam ball for strength training, explosive strength and boxing workouts.
Comments
Reader comments are not checked against the manufacturer's claims above.
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