I wear a (branded) Golf visor under a Giro MIPS helmet because I do not need sun protection I need eye protection, from glare. A Golf visor keeps sun (and rain) out of your eyes, but all of your neck and maybe chin will be vulnerable to sunburn. My wife has a Da Brim for her helmet and there really is no substitute. There is no hat on the market with a body large enough to fit a helmet through! There are few hats with brims wide enough to be worth destroying to make ersatz Da Brims out of. It really is a unique product with no equal out there at the moment.