These are DISCONTINUED by 5.11, with no replacement yet scheduled. We are out of Mediums (naturally), but we still have some Smalls and Larges. Made by Ortholite, these replacement insoles add comfort & cushioning to any of the boots we sell. Its OK to trim these with scissors to an exact fit on any brand of boots. These insoles feature triple density support, and the cushion & comfort will make your boots feel like new! These insoles are also moisture-wicking and antimicrobial.