Soothe ultra-sensitive feet with shock-absorbing, stress-relieving, ergonomic CrocsRx Silver Insoles. Now you can experience the benefits of CrocsRx in an insole! Made with Croslite Ag+, this insole is antibacterial, anti-fungal and odor-resistant, keeping your feet healthy and fresh, an ideal choice for those susceptible to foot infections. Plus, the insole provides extra cushioning to soften your steps and absorb shock, relieving stress on your feet, knees hips and lower back. APMA approved to reduce muscle fatigue.