Field durable fly masks are made from sturdy mesh chosen to withstand field wear. Excellent protection against bugs and flying insects, all outer edges and seams are finished with fleece fabric for comfort and to ensure a close fit. Securely fastened with touch close adjustable safety fastenings. Further details include: Airstream ears. Ultra-breathable. Allows full vision. Stands away from the eyes. Adjustable safety fastenings. 75+% average UV blocking, helping to diminish the risk of sunburn and sun bleaching. Minimum rating 65+% for eye and nose mesh. Effectiveness may diminish over time. Test carried out in accordance to BS EN 13758-I-2002+AI:2006.