The built-in spring system (double rebound) assists on the way back, reduces strain on wrists and shoulders, and supports proper form even for beginners.
Extra-wide rubber wheels (over 9 cm wide) deliver smooth roll without tipping and protect floors thanks to the non-slip surface.
The HMS KA40 is a modern ab roller that, thanks to its double-rebound spring mechanism, stores energy on the rollout and assists on the return. This helps you maintain proper technique, reduce stress on wrists and shoulders, and manage longer sets. Four wide rubber wheels over 9 cm wide ensure maximum stability and confidence without tipping on any surface.
For comfortable training, it includes wide elbow rests and a soft knee pad. The LCD display clearly shows time, calories, and reps, while the phone holder lets you follow workout plans or videos. With quick click-together assembly, it’s ready to use in moments, and USB‑C ensures easy charging.