Simply BONZ 3/4 length insoles are constructed of cool, breathable dual-density EVA (Ethylene Vinyl Acetate) foam. Simply BONZ 3/4 length insoles are designed to be worn in a variety of footwear. Perfect for dress shoes, casual shoes, athletic shoes, boots, (especially cowboy and work boots). Simply BONZ 3/4 length insoles are designed with greater depth in the arch and heel cup in order to maximize contact with the foot. By distributing the body weight over a larger area under the foot, pressure in all areas are significantly reduced with the Simply BONZ 3/4 length insoles. Deceleration of pronation through the use of flexible Simply BONZ 3/4 length inserts can greatly reduce the stress on all of these structures: heel pain, plantar fasciitis, knee pain, bunions, IT band problems, low back strain, and shin splints. If you have these injuries or need relief for heel pain, buy Simply BONZ 3/4 length insoles with control and cushion.