Troxel Straw Brim for helmets See sizing chart for specific helmet needs Full 4.5in wide palm leaf brim 70-141 Instantly add full shade and sun protection to most Troxel helmet models with the New Helmet Brimmer. Featuring a full 4 ½in wide genuine palm leaf brim with a patent pending helmet attachment system* that allows you to securely attach and remove the Helmet Brimmer. Brimmer comes in two sizes: A/B; based on your specific helmet and size you will need to choose either Size A or Size B. Sizing by Helmet Style: (Helmet Size/Brimmer Size) Spirit, TX, FTX: XS/A, S/A, M/A, L/B Dakota, Rebel, Intrepid: S/A, M/A, L/A, XL/B Fallon Taylor, Liberty: XS/A, S/A, M/A, L/A, XL/B Avalon: S/A, M/A, L/A Cheyenne: S/A, M/B, L/B, XL/B Sierra: S/A, M/A, L/A, XL/B