One size fits all (Up to size 11 men). Cut to fit your shoe size. Moulds to your feet for unbelievable comfort. Effective antibacterial and antifungal protection. Resists the growth of odor causing bacteria. Provides round the clock freshness. Relieves pressure on the ball of foot. Prevents heel shock by cushioning every step. Supports the arch of the foot. Increases stability by cradling the foot and preventing foot roll.