Shake Weight for Women With Bonus DVD 2.5lbs but all the durability features

but all the durability features are internal making these toys soft

Product Details: White

You'll build strength and power with every punch

It is great for office use too

Shake Weight for Women With Bonus DVD 2.5lbs but all the durability featuresThe Shake Weight is the revolutionary new way to work out the muscles in your upper body biceps, triceps, shoulders and chest using Dynamic Inertia. Its distinct motion makes the Shake Weight for the first product of its kind specifically designed to help women achieve toned, sculpted arms while eliminating flab. Unlike the impression created by the rapid motion of the device, the Shake Weight is not battery powered the user generates the movement.