For athletes, blisters and chafing can be extremely painful and irritating. BlisterShield and Sportshield from 2Toms is America’s best performing anti-friction skin guard.DEVELOPED BY AN MIT SCIENTIST, these technically advanced products offer long-lasting treatment for the prevention of blisters and chafing. Whether you’re a serious marathon runner or simply enjoy recreational sports, 2Toms’ remarkable skin guard products alleviate irritating friction that causes painful chafing and blisters.