I've recently found someone who makes flyveils for cows. I'm going to be the guinea pig and give her a go. She said if I provide measurements she can sew them up easily (same material as those for horses, you know the full face ones, that use velcro). So for those of us that keep easily handled cows, it may be good for the summer months to aid in pink eye prevention from those wretched Buffalo fly. I'll let you know how I get on.