Fly Stuff > Fly Masks & Fly Veils Opti-Force Equine Fly Mask Price $33.99 Stock status: Out of Stock Stock status: In Stock Product Code: RJ71-805 Qty: Description Sizing Information Reviews Opti-Force Equine Fly Mask by Manna Pro * Insect Shield Repellent Gear from Opti-Force* Built-in, invisible, odorless insect protection* Comfortable, secure and strong mask Opti-Force™ Equine Fly Mask protects against and repels mosquitoes, ticks, ants, flies, chiggers and midges. Innovative in the horse and fly mask category. Provides built-in, invisible, odorless insect protection. Comfortable design keeps the mask off the face and away from horse's eyes. Protects exposed areas around the mask, including muzzle and ears. Designed for secure fit with strong Clear View Vision mesh.Features Insect Shield® Repellent Technology, which was originally developed in the 1990's in conjunction with the US Army and then used in the first EPA insect repellent apparel in 2003. The process binds a proprietary permethrin formula tightly to the fabric fiber. Technology lasts the expected lifetime of the mask (25 washings). Insect Shield received a Category IV rating, the most favorable rating given by the EPA. It requires no re-application and there is no potential for over-use.Fits horses 900-1,200 lbs.