The Railblaza Mobile Device Holder, or "Mobi" for short, is ready to look after your phone, GPS, VHF, EPIRB or other mobile device. The Mobile Device Holder's spring loaded arms are sufficient for most applications, with neoprene rubber pads to give high gripping power. For extra peace of mind the adjustable, UV stabilized, urethane rubber retaining strap ensures your device goes nowhere, even in the most rugged environment.