Bosu HB25 Hydro Balls (Water Filled Kettlebell)


Holds up to 25lbs of water

The Hydro Ball was designed to bridge the gap in functional fitness training. Most exercises target only an isolated muscle group and seldom teach the body how to utilize the core. The Hydro Ball automatically eliminates both issues. The Hydro Ball does more than simply train a group of muscles; it also teaches you how to use your body in the most effective and efficient manner. The Hydro Ball is a destabilized weight that uses the principle of Hydro-Inertia™ to work your muscles while simultaneously training the nervous system. This is a key to strength, speed and overall fitness.

Product Description

The BOSU® Hydro Ball 25 (HB25) is a professional grade piece of workout equipment. Built to take the most absurd abuse and the most extreme workouts. The HB25 uses water as its source of weight, yes water, the water provides instability, which targets and activates more muscles than traditional weights. This not only makes the HB25 a great training tool, but it also allows for the weight to be adjusted up to 25 lbs based on client or workout needs. Use the HB25 just like a Kettlebell, Slam Ball, or Medicine Ball. It can serve as a substitute for many mainstays in the gym. The HB25 comes with a 1-year limited warranty. If your HB25 breaks, cracks, or leaks we will replace it no questions asked.

  • Durable: The unique shape of the HB25 increases the strength and durability of it. Designed to be dropped, tossed, and slammed the HB25 is built to last and give you peace of mind. Backed by a 1-year limited warranty. If your HB25 isn’t up to your standards please contact us at
  • Versatile: Use it like a Kettlebell, Slam Ball, or Medicine Ball the HB25 is something you can incorporate into your everyday workout routine. The HB25 is a great addition to your home gym or commercial gym.
  • Water: water is the main source of weight in the HB25 providing dynamic resistance. In short, the water moving within the HB25 will challenge your core, stabilizer muscles, and postural muscle groups more than traditional static weights. The water also allows the weight of the HB25 to be adjusted to any weight under 25 lbs.
  • Designed By Pros: The HB25 was designed with real-world testing and feedback from industry pros. We took their feedback and perfected the design and functionality of the product.
  • Proudly Made in the USA: The HB25 is proudly designed, crafted, and tested right here in the USA.

Additional Information

Weight 11.34 kg

Black, Gray