The advanced core training with the Storm 40 offers over 50 innovative movement patterns that stimulate top-down instability the way it happens in life.
- Dynamic fluid resistance
- Guaranteed not to leak
- 1 Year Limited Warranty
- Downloadable wallchart
- 3 Grip Options -Adjustable Weight (Just Add or Remove Water) -Visible and Audible feedback -Dynamic Fluid Resistance -Snap-on Plug for Easy Addition or Removal of Water -Guaranteed Not To Leak