ergoBeads are like no other wrist rests or stress balls. Ergonomically designed by an orthopedic surgeon, ergoBeads provide optimal comfort to your wrists and hands. Made of cotton Lycra, they are soft and cool against your skin. The smooth plastic bead filling gently supports and massages your hands and wrists. ergoBeads are squeezable and fun! ergoBeads cushion and massage your wrist, contour to your keyboard and mouse, are squeezable for stress relief, and ideal for isometric hand strengthening. Freeze your ergoBeads and enjoy that cooling "aah" sensation that comes from the relief of headache, neck, and wrist pain.