New Black Skin Protect Silicone Rubber Case for Cycling Training GPS Polar V650 Environment friendly silicone. Compatiable with Polar V650. Prevent your Garmin from dirt and mud. Color: Black Our skin is designed to be bold and beautiful. We've taken this colorful design and used our technology to wrap it around a high-quality moulding in black, which increases grip while keeping the slim-line hard shell form factor.