Maximum Comfort-All Day LongTarget Consumer: Workers seeking all day comfort, cushioning and support. Workers who want targeted shock absorption to soften heel impact. Recommended for: Increased shock absorption and heel strike protection. Reduced friction to help prevent blisters. Increased energy return for improved performance.Best for Use in: Work boots or shoes with removable insoles.Instructions: Remove the original insole from the shoe (some brands of shoes glue the insole to the shoe, but careful removal will not damage the shoe). Use the original insole as a guide to trace and trim the Spenco PolySorb Occupational Heavy Duty Insole.Care: Hand wash in warm water. Air dry.