Merrithew Balance & Therapy Dome, Pair (Red), 6.5 inch / 16.5 cm Each Great for preventing/alleviating plantar Fasciitis, bunions, Achilles tendonitis, fallen arches and other common foot problems Relieves discomfort in the wrist, hand and forearm from computer work and carpal Tunnel Arrange in any position and step from one side to another Gentle Spikes stimulate blood flow and circulation Perfect for home, Studio and therapeutic Use