For extra protection from flying, biting insects, wear the Cocoon Insect Shield Mosquito Head Net over your hat. It secures at the bottom with a drawstring, to keep you covered. Built in insect protection with Insect Shield protection invisible, odorless, does not change the feel of the fabric. Long lasting gear treatment on Insect Shield model lasts through 6 months of constant exposure to sun and rain. Protects against mosquitoes, ticks, ants, flies, fleas, chiggers and no see ums. Wear over a hat. Drawstring at the bottom secures the fit. Mesh size: 324 holessquare inch for great protection. Size: 19x17. Weight 1.3 oz. Pack size 2.8x2.