Before usage, make sure the product fits well in the shoe. The end of the insole should sit at the base of the toes, this may result in the insole not touching the back of the shoe. For some people, orthotic insoles may take time to feel comfortable. Feet need to get used to the structural properties of the insole, so a break in period may be necessary. If needed, build use gradually by wearing the In-Balance Orthotic Insoles for an increasing number of hours each day until you can wear them all day. If pain persists, discontinue use and consult a professional for advice.