Designed for hobbyists and professionals, the blue Anti-Static Wrist Strap from Pearstone helps protect against static electricity that can damage a computer or other electric components that you may be working on. This strap features an adjustable semiconductive elastic band that helps to ensure a proper fit. PreventS Static shock in dry environment. Keep static from damaging electronic parts and equipments. Wrap strap around your wrist and clip to a grounded source.