Durable:Gels are washable and reusable, and with proper care will continue to release skin-beneficial mineral oils throughout the life of the product. Function:Protect heel from painful irritation, spur, shoe sore, blisters, calluses and getting dry which causes cracking. More Thinner:Improved design provides even better comfort and allows 25% more space in your shoe . Protective Cushion:Provide gel protection to the sole of the foot, give the wearer a plantar protection and unmatched comfort. Moisturising Gel:Great for plantar fasciitis kits, is a treatment for dry, hard and callused skin.