We designed Dr. Scholl’s Pain Relief Orthotics for Plantar Fasciitis specifically for people who suffer pain from plantar fasciitis in the heel. They have Shock Guard Technology to provide immediate and all-day relief of pain from plantar fasciitis and can help reduce morning pain from plantar fasciitis. The package contains one pair of insoles to fit men's shoe sizes 8-13. Dr. Scholl's has been a trusted brand in foot care since 1904 when Dr. William Mathias Scholl, grandson of a cobbler, launched the company under the name Dr. Scholl Inc.1- The insoles that came in your shoes are probably removable - take them out first. 2- Place your plantar fasciitis orthotics into shoe, FABRIC SIDE UP, to test for size. If needed, trim the orthotic along the outline (on bottom of orthotic near the toes) that matches your shoe size. 3- Ensure that orthotic lays flat against bottom of your shoe, especially in the toe area. If it doesn’t fit without bunching, continue to trim as needed.Replace after 6 months or at the first sign of wear.