Scholl In-balance Lower Back Orthotic Insole supports the foot position which can reduce stress transfer to the lower back. Size Medium 7 - 8.5 Immediately help to absorb stress-inducing shock through the lower body Contour to the feet to spread your weight more evenly & reduce pressure Help to stabilise the position of your foot to support your natural walking style Full length insole to support the position of the entire foot and prevent high pressure areas, distributing the load more evenly. Heel Cup with superior shock absorption* to reduce stress transfer to the lower back. *vs other Scholl In-Balance Orthotics Insoles Range Before usage, make sure the product fits well in the shoe. The heel of the insole should be placed against 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.