Dynaflex (DNX) | Powerball Sports Pro - Hand Grip Strengthener Wrist Forearm Exerciser Waterproof Cases And they stay on your

And they stay on your head

8 x 254 x 127 mm

Bivvy XL: Size: 84" x 60"

With the addition of amber colored side lights

Dynaflex (DNX) | Powerball Sports Pro - Hand Grip Strengthener Wrist Forearm Exerciser Waterproof Cases And they stay on yourThe Powerball Sports Pro is an entry level model, ideal for anyone looking to obtain a great arm workout! The Powerball is perfect for rehab, strengthening, toning, and exercise. The Powerball strengthens your grip, and is an effective forearm and wrist exerciser The Powerball Sports Pro gyro uses resistance force to generate up to 35 pounds of torque and 13,500 RPM Ideal workout for anyone looking to improve dexterity, strength, coordination and