Masta avante combo fly pony rug masta avante combo fly pony rug with its integrated neck cover will protect horses from flies and insects and them keep dry the rug features a waterproof and breathable 600 denier top section for those sudden rain showers the lower part of the rug is breathable mesh in a contoured design that will allow airflow and protect from insects features include cross surcingles surcingle front fastenings tail flap and fillet string waterproof and brea