Bi-Laminate Diabetic Insole. Top layer is 1/8" Pink Closed Cell Polyethylene with Shore A 15-20 hardness. Bottom layer is 3/16' Blue EVA with a Shore A 50-55 hardness which is also tapered at the toes for a slim fit in shoes. In addition, they also offer a deep heel cup and moderate longitudinal arch support to provide great support and provide relief to pressure points. They are easy to trim and fit in most diabetic shoes. Ideal for patients with sensitive skin and ulceration due to diabetes or lack of sensation in the extremities of the foot. Hypoallergenic and can be molded directly to the patient's foot after application of an external heat source of about 230 degrees farenheit until the sole is soft and moldable.