Horseware Rambo Flyboots Vamoose in Silver/Purple. The Horseware Rambo Flyboots Vamoose are ideal for protecting the horse's legs from UV damage and annoying flies and biting insects. The Flyboots are made from a soft polyester airmesh fabric for maximum comfort and breathability and feature a soft fleece binding, a contoured fit and secure Velcro closures. The Flyboots have been treated with Vamoose Insect Control Technology; a synthetically engineered form of Permethrin which is a natural yet powerful fly repellent typically used against mosquitos. Read more… The Vamoose is bound to the fabric of the boots and is effective for up to 20 washes. Set of 4