Waterproof fly rugs are useful for changeable British summer weather when it can change from showery to hot within minutes! They are designed with a waterproof back panel to keep your horse dry and a lower, breathable and airy mesh section for protection from flies and to keep your horse cool. These rugs are a great choice for owners who work full time or aren't able to swap and change rugs, protecting against rain scald and keeping your horse clean and dry.