This listing is for 2 bulk units. I love my feet and my feet love Spenco Insoles. Spenco 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 Cross Trainer Premium Insoles. Because of the moderate arch support, some break in time may be required. During the first 48 hours, you may experience some discomfort until your feet are able to adjust to this new level of support. Washing: If necessary hand wash with warm water. Air dry. Size 5: US men's 12/13, UK 11/12, European 44/46.Uses:The classic PolySorb that provides maximum cushioning. Nitrogen-injected Spenco material for the ultimate in long lasting cushioning. Molded polyurethane base for moderate support. Ultra-Fresh Silpure - Exceptional odor control through advanced silver-based antimicrobial. Low friction fabric to help reduce blisters and calluses. Reinforced forefoot cushion provides extra protection and cushioning for the ball of foot. Molded polyurethane base absorbs shock and supports the arch and heel. Additional heel strike provides maximum cushioning at heel strike. Nitrogen-injected closed-cell Spenco material provides the ultimate in long lasting cushioning through spring-like shock absorption. 4-way stretch fabric with Ultra-Fresh Silpure helps prevent blisters while controlling odor. 4-way stretch fabric with silpure antimicrobial helps prevent blisters while controlling odor. EVA forefoot cushion provides superior cushioning and energy return for high impact sports. Spencore material a 5/32 inch layer of this material absorbs shock and impact to provide intense comfort and cushioning. Lightweight polysorb polyurethane foam provides arch and heel support. Spencore heel plug provides extra cushioning and shock absorption in the heel. For half sizes order the next size down.