Red Wing's original RedBed(TM) insole provides extra cushioning and arch support while helping to adjust the fit and comfort level of your footwear. This insole is a replacement insole for Red Wing Work SuperSoleA(R) styles 4433 and 4435. RedBed(TM) insoles are built using a four-layer construction for moisture management, impact absorption, stabilization and cushioning. The heel strike pads and wrap-around motion stabilizer give you that extra level of reinforcement for great all-day wear.