Here and RBNS Hoods, we make custom sun visors for all your fishing needs; Loran, Garmin, Hummingbird etc. The Hood is constructed of high impact textured ABS to withstand the outdoor elements of marine life, and incorporates a light absorbing liner on the underside. The hood attaches to your GPS with an industrial based acrylic Velcro for a superior grip! (Please read the following before ordering) ORDERING INSTRUCTIONS: We have three price tiers: SMALL 29.99, LARGE 39.99, and X LARGE 59.99. Before ordering you MUST contact us on your make and model; we will then get back to you on what size you should order, and the lead time on your custom hood. Most hoods require about a week to construct.