The Butt Fender joins the already established Bender Fender range and in doing so uses the same technology and materials, reaping many of the known benefits. It attaches to the saddle rails, with no need for additional fasteners, and hangs over the back wheel, protecting the rider against "soggy arse syndrome". Soggy Arse Syndrome: Inch the effect caused by the rear wheel throwing mud and rainwater to your lower back region, which then soaks through to your derrière, leading to a very uncomfortable chafing feeling, especially on those longer rides Inch. Shudder So if you"re prone to this problem and are looking for a light weight, minimalist solution, weighing in at just 19g; look no further.