A diameter chosen by leg length, and a burst rating
An exercise ball is chosen by diameter, and the rule the makers print is a useful one: sitting on the ball, hips and knees should be level, which puts most adults between 1.55 m and 1.70 m on a 55 cm ball, 1.70 m to 1.85 m on a 65 cm, and above that on a 75 cm. It is the only sizing guidance on this shelf that is consistent between brands. The second figure is the one that decides what happens when the ball meets a stray plate: the anti-burst rating. A true anti-burst ball deflates slowly through a puncture rather than exploding, and the serious makers state a burst resistance in kilograms alongside a static load. Those are two different numbers — the static load is what it holds sitting still, the burst figure is what it survives — and a listing quoting only one is quoting the flattering one. Material thickness, in millimetres, is the figure underneath both, and it is published less often than it should be. Then the surface: a light texture is what stops a ball sliding out from under a plank, and a high-gloss finish is the one that does on a smooth floor. What comes in the box varies more than on any other shelf here — a pump is essential and usually included, a plug remover is not always, and a stability ring that stops the ball rolling away is sold separately about half the time. We compare diameter, burst rating, material, max user weight and pump supplied.
Ø 65 cm, anti-burst, pump included
A 65 cm ball with a textured surface and a pump in the box. Anti-burst is claimed without a method, as it is on most of this shelf.
Best for: A first exercise ball where the pump in the box is the priority
Five sizes 45–85 cm, anti-burst PVC, pump included
A five-size range in anti-burst PVC, with the maker stating the ball will not burst if punctured — a stronger form of the claim than most of this shelf makes.
Best for: Somebody choosing from a full size range and using the ball as a chair
Three sizes, foot pump, surface line pattern
A pilates ball in three published sizes with a foot pump and a longitudinal-and-transverse line pattern moulded into the surface for grip.
Best for: Somebody who wants a choice of size and will accept no published load
Ø 65 cm, special PVC, load stated in catties
A 65 cm ball in PVC whose load figure is published as 300 catties — a unit that is not kilograms, and which this page does not convert.
Best for: Somebody who wants the material named and will accept the unit as printed
300 kg, extra-thick wall, anti-burst explained
The only listing here that explains what anti-burst means: air escapes slowly when the ball is damaged rather than the ball failing at once.
Best for: Somebody who wants to know what the anti-burst claim on this shelf actually means
Ø 85 cm, 250 kg, suits users from 185 cm
The largest ball here at 85 cm, published with the user height it suits — from 185 cm upward — and a 250 kg capacity, with a foot pump.
Best for: A user of 185 cm or more, for whom the smaller sizes sit too low
Five sizes, 2 spare valve plugs, inflation procedure
The only listing here that publishes an inflation procedure — inflate, rest two to three days, then top up — and the only one to supply spare valve plugs.
Best for: Anybody who wants the ball to reach and hold its stated diameter
65 cm, over 150 kg, 5 sizes, plug and remover
A 65 cm stability ball rated above 150 kg, supplied with a quick pump, a plug and a plug remover — the only listing here to include the last of those.
Best for: Somebody who will deflate and re-inflate the ball more than once
Ø 65 cm, 400 kg, cites Directive 93/42 EEC
The highest capacity here at 400 kg, and the only ball on this shelf to cite a regulation: the European Medical Devices Directive 93/42 EEC.
Best for: Somebody who wants the regulatory basis named rather than a marketing term
Only the specifications at least four models out of five state. A column that is more empty than full compares nothing.
| Model | Price | Amazon reference | Burst rating | Diameter | Material |
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Specifications: manufacturer sheets and Amazon product pages. Prices and availability: Keepa. No product on this site has been physically tested.
Most recent revision in this category: September 20, 2026.
