silicone insoles are hypo-allergenic, non-toxic and odourless. Silicone insoles will not flatten under repeated pressure from walking or standing and have a very long life expectancy.It is a good Ideal for plantar pain, heel pain/spurs, metatarsalgia, arthritis, plantar fat pad atrophy, and lower back and joint pain.Silicone insoles are suitable for everyday wear during sports, work or recreational activities. Silicone insoles are also 'non-skid' insoles which are easy to clean, durable and a joy to wear