PTP - The PTP CoreBall is a versatile pro-grade gym ball that can be used during core stability and flexibility exercises. In particular, using a CoreBall can help activate the muscles surrounding the abdomen, the pelvic floor and the back, which act as the important foundation to all functional movements and daily activity in general. This particular Steel Grey CoreBall is our largest CoreBall and features a 75 cm diameter, which makes it suitable for individuals who are over 185 cm (or almost 6 ft 1) tall. All our CoreBalls come with a bonus pump for added convenience.
PTP - The PTP CoreBall is a versatile pro-grade gym ball that can be used during core stability and flexibility exercises. In particular, using a CoreBall can help activate the muscles surrounding the abdomen, the pelvic floor and the back, which act as the important foundation to all functional movements and daily activity in general. This particular Steel Grey CoreBall is our largest CoreBall and features a 75 cm diameter, which makes it suitable for individuals who are over 185 cm (or almost 6 ft 1) tall. All our CoreBalls come with a bonus pump for added convenience.
in 3 offers
The lowest price for PTP 65cm CoreBall Black right now is $45.00 at Dynamo Fitness Equipment, compared across 3 retailers.
The all-time low was $30.00 on 7 Feb 2026 — today's price is 50% above the lowest ever. It has been notably cheaper before — worth setting a price alert.
Prices last updated 3 June 2026.
PTP 65cm CoreBall Black
PTP - The PTP CoreBall is a versatile pro-grade gym ball that can be used during core stability and flexibility exercises. In particular, using a CoreBall can help activate the muscles surrounding the abdomen, the pelvic floor and the back, which act as the important foundation to all functional movements and daily activity in general. This particular Steel Grey CoreBall is our largest CoreBall and features a 75 cm diameter, which makes it suitable for individuals who are over 185 cm (or almost 6 ft 1) tall. All our CoreBalls come with a bonus pump for added convenience.
PTP - The PTP CoreBall is a versatile pro-grade gym ball that can be used during core stability and flexibility exercises. In particular, using a CoreBall can help activate the muscles surrounding the abdomen, the pelvic floor and the back, which act as the important foundation to all functional movements and daily activity in general. This particular Steel Grey CoreBall is our largest CoreBall and features a 75 cm diameter, which makes it suitable for individuals who are over 185 cm (or almost 6 ft 1) tall. All our CoreBalls come with a bonus pump for added convenience.
Last updated at 03/06/2026 14:45:34
PTP 65CM Onyx Black Exercise CoreBall with Pump
Delivery $11.58
PTP 65cm CoreBall Black
Delivery between 8–11 June $10.99
PTP Core Ball - 65cm - Onyx Black
Delivery between 9–17 June $14.99
originally posted on rebelsport.com.au
Decided to get this for my new WFH office chair. Great quality ball even when pumped manually by hand using the pump that came with it. Have yet to see the maximum potential this ball has if an electric pump was in use. Really happy with this ball and I now have a comfy seat while working in front of my laptop.
originally posted on rebelsport.com.au
The ball itself is fine and looks good. It's a little bit flat after a couple of weeks - to be honest I don't know whether that's to be expected or not. But the included pump is dismal. It isn't capable of inflating the ball to its recommended size. Once the return air pressure starts to get higher in the ball, the pump leaks air rather than pumping it in. You'll need your own pump if you want to inflate the ball to the full 65cm.
originally posted on rebelsport.com.au
PTP have designed a high quality and fantastic exercise ball.The surface of the ball is non-slip so you feel secure during use and the material is thick enough to give you confidence it won't pop when using additional equipment (such as weights).The included exercise booklet provides some great exercises/techniques to try and lets you mix up your routine easily.Promotion of the exercise booklet might assist those who haven’t considered purchasing a ball before.And Rebel is selling the ball cheaper than the actual PTP website which is great!
| Included Components | 1 x CoreBall with Pump |
| Product dimensions | 65 x 65 x 65 cm; 1.45 Kilograms |
| Is Discontinued By Manufacturer | No |
PTP 65CM Onyx Black Exercise CoreBall with Pump
Delivery $11.58
PTP 65cm CoreBall Black
Delivery between 8–11 June $10.99
PTP Core Ball - 65cm - Onyx Black
Delivery between 9–17 June $14.99
Decided to get this for my new WFH office chair. Great quality ball even when pumped manually by hand using the pump that came with it. Have yet to see the maximum potential this ball has if an electric pump was in use. Really happy with this ball and I now have a comfy seat while working in front of my laptop.
The ball itself is fine and looks good. It's a little bit flat after a couple of weeks - to be honest I don't know whether that's to be expected or not. But the included pump is dismal. It isn't capable of inflating the ball to its recommended size. Once the return air pressure starts to get higher in the ball, the pump leaks air rather than pumping it in. You'll need your own pump if you want to inflate the ball to the full 65cm.
PTP have designed a high quality and fantastic exercise ball.The surface of the ball is non-slip so you feel secure during use and the material is thick enough to give you confidence it won't pop when using additional equipment (such as weights).The included exercise booklet provides some great exercises/techniques to try and lets you mix up your routine easily.Promotion of the exercise booklet might assist those who haven’t considered purchasing a ball before.And Rebel is selling the ball cheaper than the actual PTP website which is great!
Pretty sure the measurements are wrong - couldn’t get it anywhere near 65cm. Also no instructions about inflation or safety despite the internet having clear warnings about this. I also needed to return the first one because there was no plug in it. But despite all that, it’s generally well constructed, stable and fit for purpose.
HiWe recently purchased a 75cm Core all to assist our daughter who has movement issues. The staff member was lovely, helpful and gave knowledgable advice.I will go back to her with our other needs.
This is our 2nd purchase of the coreball, we love it. Stretching, balance practise, even labouring! This ball is used alot in our household. The only thing i could say slightly as a negative is that it starts off quite small, and stretches.
We purchased this ball for my wife to help with a twin pregnancy. It’s been great, durable and supportive, although a 65cm may have been better for her height, with a little less air it was perfect. Rebel even inflated it for a click and collect purchase.
Love love love this fit ball and its size. I'm 172cm and should be using a bigger ball but due to a double fusion in my lumbar region which has weakened this area substantially, this size is absolutely perfect for jack-knifes, Russian twists, pikes and push-ups. It's strong construction gives me great confidence which is paramount in my recovery/rehab.
Great addition to my home circuit. I'm a little on the heavy side ATM but feel perfectly safe with the quality of this ball. I swore off them decades ago when one burst on me while sitting but I saw one of these ones at a friend's house and decided to try again due the the quality and make. Super stoked.
I purchased this over a year ago, but it was the wrong colour (grey instead of black) and substantially smaller than my previous 65cm ball. Thinking there must have been error despite the external packaging saying black and 65cm, I took it back to Rebel Sport, who were helpful and responsive, and we selected another packaged black 65cm PTP fit ball.As they didn't have any on display (obviously due to space), I requested they open it and we pump it up to ensure it was the correct size. The two staff members were beautifully responsive, and opened it--and it was also grey. Although I preferred the black, I didn't care by this stage (too much time, energy, blah blah), so they went out the back and pumped it up... same thing! It was the equivalent of a 55cm ball, and ... MoreI purchased this over a year ago, but it was the wrong colour (grey instead of black) and substantially smaller than my previous 65cm ball. Thinking there must have been error despite the external packaging saying black and 65cm, I took it back to Rebel Sport, who were helpful and responsive, and we selected another packaged black 65cm PTP fit ball.As they didn't have any on display (obviously due to space), I requested they open it and we pump it up to ensure it was the correct size. The two staff members were beautifully responsive, and opened it--and it was also grey. Although I preferred the black, I didn't care by this stage (too much time, energy, blah blah), so they went out the back and pumped it up... same thing! It was the equivalent of a 55cm ball, and I'm convinced it was a packaging error, as I'm not colour blind, and I've owned several 65cm fit balls! The staff member even measured the ball, pumped it up a little more, re-measured, in case I’d got it wrong, but it struggled to even reach 55cm. He checked other PTP packages for the same product, and they were clearly grey too, so we guessed they were also 55cm.Without any other fit balls in stock to meet my needs, I got a refund and went elsewhere. Kudos to Rebel Sport for handling it well, but disappointing performance by PTP, who clearly make sturdy fit balls (even if they include a hand pump rather than than an easier-to-use foot pump), but apparently can’t get their packaging right.The PTP was clearly good quality and likely to be very durable, though that also meant that it was quite hard and inflexible, so less comfortable than other fit balls I’ve used. Too soft, and they become squishy and useless, but too firm and they are as unpleasant as a hard chair!
| Included Components | 1 x CoreBall with Pump |
| Product dimensions | 65 x 65 x 65 cm; 1.45 Kilograms |
| Is Discontinued By Manufacturer | No |
